fab

+[[battery-charge-dat]] - [[fast-charge-methods-dat]] - [[OPM1185-dat]] - [[OPM1093-dat]]

+- [[battery-charger-dat]] - [[battery-1S-dat]] -

+

+

+

+

+

+- [[robot-pet-dat]]

+

+# robot-pet-dat

+

+- [[battery-1S-dat]] - [[battery-2S-dat]] - [[battery-3S-dat]] - [[battery-4S-dat]] - [[battery-5S-dat]] - [[battery-packs-dat]]

+- [[OPM1093-dat]]

+| Type | Feature | charge-current |

+| ---------------- | --------------------------------- | -------------- |

+| TP5000 | Li-MnO2, LiFePO4(LFP) charger IC, | 0.5A |

+| [[MCP73831-dat]] | 0LED indicator | 0.5A |

+| TP4056 | Linear charging | ~1A |

+| TP4054 |

+

+# desoldering-dat

+

+- [[PSO1043-dat]] == desoldering pump

+

+- [[PSO1038-dat]] == desoldering wire (wick)

+

+- [[hot-air-station-dat]]

+

+- [[Hot-Tweezer-dat]]: These are like regular tweezers but with heated tips. They can simultaneously heat and grip small two-leaded SMD components like resistors, capacitors, and SOT packages for easy removal.

+

+

+

+

+| Feature | Desoldering Wire (Wick) | Desoldering Pump |

+| ----------------- | ------------------------------ | --------------------------------------- |

+| **Function** | Absorbs melted solder | Sucks up melted solder |

+| **Best For** | Small, precise work | Removing large amounts of solder |

+| **Ease of Use** | Requires steady hand & flux | Requires quick reaction & suction |

+| **Effectiveness** | **Good for fine traces & SMD** | **Good for through-hole components** |

+| **Messiness** | Leaves minimal residue | Can scatter solder if not used properly |

+| **Durability** | One-time use per section | Reusable multiple times |

+| **Cost** | Cheap, but needs refilling | More expensive, but reusable |

+| **Skill Level** | Easier for beginners | Requires practice to master |

+| **Item** | [[PSO1043-dat]] | [[PSO1038-dat]] |

+

+

+

+

+## mess desoldering

+

+- [[preheat-bed-dat]]

+

+

+

+

+

+## ref

+

+- [[desoldering]] - [[soldering]]

+

+

+- [[soldering-dat]] - [[tech-dat]]

+# soldering-tools-dat

+- [[soldering-iron-dat]] - [[soldering-tip-dat]] - [[soldering-station-dat]]

+- [[preheat-bed-dat]]

+- [[solder-paste-dat]]

+- [[fab-stencil-dat]]

+- [[PCB-Adhesive-dat]] - [[SMT-Red-Adhesive-dat]]

+- [[soldering-dat]] - [[desoldering-dat]]

+

+- [[spot-welding-dat]]

+- [[PCB-dat]]

+- [[PCB-cleaner-dat]]

+- [[hot-air-station-dat]]

+## soldering rack

+- [[PSOS033-dat]] - [[PSOS010-dat]]

+## soldering wires

+- [[PSO1030-dat]]

+## Soldering Flux

+- [[soldering-flux-dat]]

+- [[PSO1046-dat]]

+- [[soldering-dat]]

+

+# hot-air-station-dat

+

+## common defective error

+

+- temperature sensor read wrong

+

+

+

+## hot air handle

+

+- [[high-voltage-warn-dat]]

+

+yellow wires 220VAC

+

+3V and 5V DC also on board for [[fan-dat]], etc

+

+

+

+wires

+

+✅ In a hot-air handle with only heater + temperature sensor, no fan and no reed switch

+

+The internal parts are:

+

+Heating element (ceramic heater) → always 2 wires

+

+Temperature sensor → usually 2 wires

+

+Protective ground wire → 1 wire

+

+This adds up to 5 wires, matching your description.

+

+## ref

+

+- [[hot-air-station]]

+

+- [[soldering-tools-dat]] - [[fab-workspace-dat]]

+

+# preheat-bed-dat

+

+- desoldering temperature 270 degree C

+

+## ref

+

+- [[desoldering-dat]]

+

+# solder-paste-dat

+

+- [[high-precise-printing-dat]]

+

+

+## “Solder paste should be more viscous so it doesn’t spread or drip.”

+

+- **More viscous** → thicker, stickier, flows slowly

+ → Good for solder paste — it stays where you apply it.

+

+- **Diluted** → thinned by adding liquid (like flux or solvent)

+ → Not good — it becomes too runny and won’t hold components well.

+

+

+

+

+

+## Low temperature soldering paste

+

+Low temperature soldering paste is a type of solder paste designed to melt and flow at lower temperatures than standard solder pastes. Here are its main features:

+

+- Melting Point: Typically melts between 130°C and 180°C, compared to standard lead-free solder pastes which melt around 217°C.

+- Composition: Often contains bismuth-based alloys (e.g., Sn42/Bi58) instead of traditional tin-silver-copper (SAC) alloys.

+- Applications: Ideal for temperature-sensitive components, rework, or double-sided PCB assembly where high heat could dam-Age parts.

+- Reduced Thermal Stress: Minimizes risk of warping or dam-Aging PCBs and components.

+- Energy Saving: Lower reflow oven temperatures reduce energy consumption.

+- Compatibility: Useful for mixed-technology boards or assemblies with plastic connectors and LEDs.

+

+

+

+

+### Solder Paste Types and Applications

+

+

+| Solder Paste Model | Composition | Powder Type | Application/Notes |

+| -------------------- | ------------------- | ----------- | --------------------------------------------------- |

+| Mobile Repair GY618B | Sn62.8-Pb36.8-Ag0.4 | Type 4 | For mobile phone repair |

+| A-888 | Sn63-Pb37 | Type 3 | resistors, capacitors, simple IC PCBs |

+| A-888 | Sn63-Pb37 | Type 4 | resistors, capacitors, fine-pitch/multi-pin IC PCBs |

+| SMT Chip A-888 | Sn63-Pb37 | Type 5 | resistors, capacitors, dense/multi-pin IC PCBs |

+| GY-626B | Sn62.9-Pb36.9-Ag0.2 | Type 4 | QFN type PCBs |

+| GY-618B-B | Sn62.8-Pb36.8-Ag0.4 | Type 4 | BGA pack-Age PCBs |

+| LED Chip GY361 | Sn55-Pb45 | Type 3 | LED lamps, strips, and tapes |

+| GY638A | Sn60-Pb40 | Type 3 | Performance superior to GY361 |

+

+

+

+## target

+

+- [[FPC-dat]]

+

+

+

+## Common type Solder Paste

+

+| melting point | tin content | Note |

+| ------------- | ----------- | -------------------------------------------------------------------- |

+| 138 C | 42% | ultra-low temperature, bismuth-based, for special low-temp soldering |

+| 150 C | 42% | low temperature, bismuth-based, for temperature-sensitive components |

+| 183 C | 63% | best for most common PCB, small spacing, high parts density |

+| 217 C | 99.3% | lead-free, SAC305 alloy, standard for RoHS compliant PCBs |

+

+

+

+

+

+

+

+

+

+

+

+

+## solder paste printer

+

+

+

+

+

+## ref

+

+- [[solder-paste]]

+

+- [[soldering-dat]]

+

+# soldering-flux-dat

+

+

+

+- helogen free == white

+

+

+环保助焊松香

+- 易焊锡

+- 防氧化

+- 无腐蚀性

+- 无铅环保

+- 绝缘阻抗高

+- 浸润性好

+

+

+## ref

+

+- [[soldering-tools-dat]]

+

+# soldering-iron-dat

+

+

+## Soldering Iron

+

+soldering iron

+

+- [[PTOS009-dat]]

+

+usb soldering iron - [[PSO1055-dat]]

+

+

+

+

+

+## soldering iron tips

+

+- [[PSO1025-dat]] - [[PSO1024-dat]] - [[PSO1023-dat]]

+

+all soldering tips family 1

+

+

+

+Common soldering tips system: (C1151), ESD(C1152), 900, 900M, 907, 933, 936, 937, 942

+

+

+

+Yes, the tip of a soldering iron usually has a surface coating, not just bare copper or iron. This coating serves several purposes: preventing corrosion, improving heat transfer, and extending lifespan. Common types of coatings include:

+

+1. **Iron Plating**

+ - Most soldering iron tips have a copper core, but copper oxidizes easily and wears quickly.

+ - The surface is plated with iron to prevent oxidation and improve durability.

+ - Advantages: High temperature resistance and long lifespan.

+

+2. **Nickel or Chrome Plating**

+ - Some tips add a layer of nickel or chrome on top of the iron plating.

+ - Purpose: Further corrosion resistance and increased surface hardness.

+

+3. **Solder Coating (Tin layer, formed during use)**

+ - When first used, a thin layer of solder forms on the tip from molten solder or flux.

+ - This tin layer protects the tip from oxidation and improves soldering performance.

+ - Tip: Always apply a thin layer of solder after use to extend the tip’s life.

+

+4. **Ceramic or Special Coatings (on some high-end tips)**

+ - Some high-temperature or specialty soldering tips have ceramic coatings.

+ - Purpose: Corrosion resistance, high temperature tolerance, and reduced solder sticking.

+

+**Summary**: The core is usually copper, with an iron plating, sometimes additional nickel/chrome, and a protective tin layer forms during use.

+

+

+

+

+## ref

+

+- [[soldering-tools-dat]]

+

+

+# soldering-materials-dat

+

+

+Nickel, Copper, and Sandwich (For 18650/21700)

+

+| Material | Best Use Case | Pros | Cons |

+| :-------------- | :--------------------------------- | :--------------------------------------------------------------------------- | :--------------------------------------------------------------------- |

+| **Pure Nickel** | Standard DIY packs (5A-15A) | Easiest to spot weld; corrosion resistant. | Higher resistance than copper; heats up at high current. |

+| **Pure Copper** | High-performance (30A+) | Lowest resistance; minimal heat generation. | Extremely difficult to spot weld (requires laser/ultrasonic). |

+| **Sandwich** | High-current DIY (Nickel + Copper) | Better conductivity than pure nickel; weldable with high-power spot welders. | Hard to tune welding parameters; risk of "cold" welds or blow-through. |

+

+

+

+---

+

+### 2. Al-Ni (Aluminum-Nickel) Composite Strips

+

+**Primary Purpose:** Transitioning between dissimilar metals.

+

+* **When to use:** Specifically for **Pouch Cells** or **Prismatic Cells** where the positive terminal (tab) is made of **Aluminum**.

+* **Why:** Aluminum and Nickel do not bond well through standard spot welding.

+* **How it works:** The strip is bi-metallic (half Al, half Ni).

+ * **Al side** is welded to the battery's Aluminum tab.

+ * **Ni side** provides a weldable surface for standard nickel busbars or wires.

+* **Summary:** It is a "bridge" material, not for 18650s (which use steel/nickel caps), but for batteries with raw aluminum electrodes.

+

+

+

+

+

+

+## 18650 Interconnect Materials: Why vs. Why Not

+

+| Material | Conductivity | Weldability | Best Used For... |

+| :-------------- | :---------------- | :------------ | :----------------------------------------------------------- |

+| **Pure Nickel** | Good (~25% of Cu) | **Excellent** | Standard DIY packs, Robotics (Rover V2), Electric bikes. |

+| **Pure Copper** | **Best (100%)** | **Very Poor** | Ultra-high performance racing drones or EV modules. |

+| **Sandwich** | High | **Difficult** | High-current DIY builds (Copper strip under a Nickel strip). |

+

+---

+

+### Why we choose Pure Nickel for 18650s:

+1. **High Resistance (Ideal for Welding):** Spot welding relies on electrical resistance to generate heat. Nickel resists current just enough to melt instantly at the contact point, creating a strong bond.

+2. **Thermal Control:** Copper is a "heat sink"—it pulls heat away so fast that the weld point never gets hot enough to melt, but the battery cell underneath gets dangerously hot.

+3. **Corrosion Resistance:** Nickel does not rust or oxidize easily. Copper turns green (oxidizes) over time, which increases resistance and creates "hot spots."

+4. **Tool Compatibility:** Most hobbyist spot welders (Sunkko, Malectrics, Kweld) are designed specifically for the physics of nickel.

+

+

+

+## ref

+

+- [[soldering-tools-dat]]

+

+

+

+

+# soldering-tools-spot-welding-dat

+

+

+- Nickel Strip

+

+

+## cap super spot soldering

+

+- [[capacitor-super-dat]] - [[capacitor-dat]]

+

+

+- 可焊0.25mm

+

+

+

+

+specifically for [[battery-dat]]

+

+

+

+激光转镍

+

+

+

+

+## ref

+

+- [[battery-dat]]

+

+- [[soldering-tools-spot-welding]] - [[soldering-tools]]

+

+# PCB-cleaner-dat

+

+## PCB-cleaner-dat

+

+### Product Usage Instructions

+

+Product dimensions and specifications

+

+**Ultrasonic Cleaning:** Pour the board cleaner into the ultrasonic cleaner, place the PCB board or workpiece to be cleaned inside, turn on the machine, and clean for 4-6 minutes. Then, ventilate and dry for 5-10 minutes.

+

+**Immersion Cleaning:** Pour this product into a container, immerse the PCB board, then use a brush to scrub it clean, and finally air dry.

+

+**Spot Cleaning:** Wet a brush or lint-free cloth with this product and directly scrub the oily area. Repeat the scrubbing several times, then air dry.

+

+**Brush Cleaning:** Pour out this product, soak a brush or lint-free cloth, and then wipe the item that needs cleaning.

+

+

+## Recommended Eco-Friendly and Cost-Effective PCB Cleaner

+

+### ✅ Recommended Product: Isopropyl Alcohol (IPA, concentration ≥ 99%)

+

+#### 🔹 Features

+

+- **Eco-Friendly:** Evaporates cleanly with no residue; biodegradable

+- **Low Toxicity:** Safer than strong solvents like acetone or trichloroethylene

+- **Effective Cleaning:** Removes flux, grease, dust effectively

+- **Affordable:** Inexpensive and widely available

+- **Versatile:** Suitable for most PCBs and electronic components

+

+#### 🔹 Precautions

+

+- Flammable – keep away from open flames

+- Ensure good ventilation during use

+- Choose ≥99% anhydrous IPA (electronic grade)

+

+---

+

+### 🆚 Common PCB Cleaner Comparison Table

+

+| Product Name | Eco-Friendliness | Price | Cleaning Power | Conductive | Notes |

+|-----------------------|------------------|-----------|----------------|------------|-----------------------------------------|

+| Isopropyl Alcohol (IPA) | ★★★★☆ | ★★★★★ | ★★★★☆ | No | Best value, widely applicable |

+| Water-Based Cleaner | ★★★★★ | ★★★★☆ | ★★★★☆ | No | Safe for equipment, slightly weaker |

+| Acetone | ★★☆☆☆ | ★★★★☆ | ★★★★★ | No | Strong but harsh, can damage plastics |

+| Trichloroethylene | ★☆☆☆☆ | ★★★☆☆ | ★★★★★ | No | Toxic, environmentally restricted |

+

+---

+

+### ✅ Summary Recommendation

+

+> If you’re looking for **eco-friendly + affordable + convenient**, the best option is:

+>

+> ### 👉 High-Purity Isopropyl Alcohol (99% IPA)

+> Available in bulk or spray form; can be diluted slightly if needed.

+

+

+## ref

+

+- [[PCB-cleaner]]

+

+

+# PCB-cutter-dat

+

+## simple fixing

+

+- PCB knife cutter

+

+- [[PSO1060-dat]] == [PCB Trace Cutter Editor Knife](https://www.electrodragon.com/product/pcb-cutterknife/)

+

+- [[cable-dat]]

+

+## ref

+

+- [[fab-PCB-soldering-tools-dat]]

+# fab-PCB-soldering-tools-dat

+

+- [[PCB-soldering-tools-dat]] - [[PCB-soldering-skills-dat]] - [[PCB-tools-dat]]

+

+

+- [[PSO1043-dat]] - [[PSO1038-dat]]

+

+- [[PCB-cleaner-dat]]

+

+- [[solder-paste-dat]] - [[fab-PCBA-dat]]

+

+- [[soldering-tools-dat]]

+

+- [[fab-PCB-soldering-dat]]

+

+

+## soldering skills

+

+- training board - [[PPB0021-dat]]

+

+

+

+### soldering chip with pads underneath, such as QFN, BGA, LGA, etc.

+

+- [[allwinner-dat]]

+

+T113 soldering note: 务必先焊接除T113以外的元器件，烧录51单片机固件，按下面的说明，测量3.3V、1.5V、0.9V全部正常再焊T113，否则若EA3036的FB虚焊将会直接烧坏T113。

+

+T113 soldering note (English): Be sure to solder all components except T113 first, program the 51 MCU firmware, and follow the instructions below to measure 3.3V, 1.5V, and 0.9V to ensure they are all normal before soldering T113. Otherwise, if the FB pin of EA3036 is poorly soldered, T113 may be directly damaged.

+

+

+

+### FPC soldering

+

+- [[FPC-dat]]

+

+### alternative temperature-sensitive items soldering

+

+

+> No special solder paste is needed; the key point is not to heat the FPC connector directly—apply heat from the back side of the PCB.

+>

+> **Explanation:**

+> When soldering temperature-sensitive components like FPC (Flexible Printed Circuit) connectors, you generally do not need to use any special type of solder paste. The most important thing is to avoid applying hot air or direct heat to the FPC connector itself, as it can be easily damaged by high temperatures.

+> Instead, use a hot air gun or soldering tool to heat the solder joints from the back side of the PCB. This approach helps protect the delicate connector and ensures a reliable solder joint.

+

+

+

+## tips

+

+焊接注意事项

+

+1. 确保焊接的部位干燥干净无油污无氧化；

+

+2. 选择60W或更大功率的电烙铁，保证温度足够高，烙铁头可选尖头或马蹄头等以便传热和焊接（软包电池需要200W起的电烙铁，大单体需要500W起的电烙铁)

+

+3. 先加热被焊接部位 (烙铁头紧贴焊接部位几秒钟）再同时快速送锡至焊点，焊接完成；

+

+4. 注意：焊接过程烙铁不要离开金属表面，保持加热趁热焊接，锡丝尽量连续不断。

+

+

+

+

+# tools-PCB-dat

+

+## modification tools

+

+- cutting tools == [[PSO1060-dat]], shortly cutt the PCB trace

+

+- mini drill bits == [[PTO1036-dat]], drill little holes to disconnect the PCB trace

+

+

+

+

+## wires

+

+- [[flywire-dat]] - [[jumper-wire-dat]] - [[cable-dat]] - [[awg-wires-dat]]

+

+

+

+

+## other tools

+

+- [[hot-gun-glue-dat]] - [[glue-dat]]

+

+## cleaner

+

+- [[PCB-cleaner-dat]]

+

+

+## soldering rack

+

+[Soldering Iron Wires Rack w/cleaning slots R2](https://www.electrodragon.com/product/casting-metal-soldering-rack/) - [[PSOS010-dat]]

+

+

+## ref

+

+- [[tools-dat]]

+

+

+

+

+## ref

+

+- [[desoldering-dat]]

+

+- [[welding-dat]] - [[spot-welding-dat]] - [[PTC-dat]]

+

+- [[ICT-testing]]

+

+- [[soldering]]

+

+# SMD-tester-dat

+

+## good list

+

+| Model | Type/Style | Issue/Note |

+| --------------- | ---------------- | ------------------------------ |

+| LIYIGAO UA6013L | Capacitor tester | Good for capacitor measurement |

+

+

+

+## ref

+

+- [[tools-dat]]

+

+# IT8511A-dat

+

+# KP182-dat

+

+

+

+## KP182（200W/150V/20A） 不带通讯

+

+CC/CV/CR/CP four modes, battery capacity, internal resistance test, overcurrent, comparison, dynamic test, 4-digit display

+

+CC/CV/CR/CP four modes, battery capacity, internal resistance test, overcurrent, comparison, dynamic test

+

+RS232/RS485 communication, enhanced host computer software, 220V/110V power supply switching, 5-digit display

+

+## Product Overview:

+

+KP182/4 series electronic loads can be widely used in LED lighting, power supplies, chargers, batteries, and other industries for product testing and aging. Its current mode can be used to simulate a resistive load to discharge batteries and load power supplies; its voltage mode can be used to simulate a capacitive load for chargers and can simulate the constant voltage characteristics of LEDs to load LED drive power supplies. It is simple to use, easy to adjust, has perfect protection functions, and its performance and functions are incomparable to traditional slide-wire resistors. Used in related industries, it can greatly improve production efficiency and reduce costs.

+

+## Special functions and advantages of KP182/4 series products:

+

+- ● Four basic load modes: CC, CV, CW, CR;

+- ● Input positive and negative reverse connection protection and alarm;

+- ● Optimized heat dissipation structure to achieve high power density;

+- ● Digital control method, high precision and good stability;

+- ● Equipped with over-voltage, over-current, over-power, over-temperature protection;

+- ● Remote voltage measurement function;

+- ● Automatic test function, with external I/O trigger signal, PASS, FAIL indicator signal (KP184 only);

+- ● 10KHz dynamic test function;

+- ● Battery capacity test function;

+- ● Battery internal resistance test function;

+- ● Overcurrent protection point/protection time test function;

+- ● Fan PWM temperature control;

+- ● Power supply 110VAC/220VAC switchable use (KP184 only);

+- ● RS485, 232 communication interface, MODBUS protocol (KP184 only);

+- ● Multi-load online synchronous operation function (KP184 only);

+- ● Powerful and user-friendly host computer software support (KP184 only);

+

+

+

+

+

+

+

+## ref

+

+- [[KP182]]

+

+# electronic-loader-dat

+

+- [[KP182-dat]] - [[IT8511A-dat]]

+

+- [[internal-resistance-meter-dat]]

+

+

+

+

+## mode: CC, CV, CW, CR

+

+

+

+

+## How to Test a 18650 Battery Capacity Using an Electronic Load

+

+### ✅ What You Need:

+- Electronic Load (DC electronic load, programmable preferred)

+- Fully charged 18650 battery

+- Battery holder or safe terminal connectors

+- Multimeter (optional, for voltage verification)

+- Logging software or notebook (if needed)

+

+---

+

+### ⚡ Step-by-Step Instructions

+

+#### 1. Fully Charge the Battery

+- Use a proper lithium-ion charger.

+- Ensure the voltage reaches **4.2V** before testing.

+

+#### 2. Connect the Battery

+- Insert the battery into a **18650 holder**.

+- Connect **positive (+)** to the load's positive terminal.

+- Connect **negative (−)** to the load's negative terminal.

+- Double-check for correct polarity.

+

+#### 3. Configure the Electronic Load

+- **Mode**: Constant Current (CC)

+- **Discharge Current**: e.g., **1.0 A**

+- **Cut-off Voltage**: e.g., **3.0 V** (to protect the cell)

+

+> ⚠️ Don't go below 2.5V to avoid damaging the battery.

+

+#### 4. Start the Discharge Test

+- Turn on the load.

+- The battery will begin discharging at the set current.

+- The load will stop automatically at the cut-off voltage.

+

+#### 5. Read the Results

+- Check the screen of the electronic load.

+- Look for:

+ - **Capacity (mAh)**

+ - **Energy (Wh)**

+ - **Total time**

+

+> Example output:

+> `Capacity: 2600 mAh`

+> `Energy: 9.5 Wh`

+

+---

+

+### 📌 Notes & Tips

+

+Test at room temperature (around 25°C) for accuracy.

+

+If the load doesn’t show capacity:

+

+ Capacity (mAh) = Current (A) × Time (h) × 1000

+

+ 0.5A for 1 hour == 0.5 x 1A = 500mAh

+

+ 0.5A for 1.2 hour = 600 mAh

+

+

+

+## ref

+

+- [[electronic-loader]]

+

+# tools-dat

+

+- [[fab-workspace-dat]] - [[multimeter-dat]] - [[SMD-tester-dat]]

+

+- [[instrument-dat]] - [[oscilloscope-dat]] - [[multimeter-dat]] - [[tools-dat]] - [[fab-workspace-dat]]

+

+

+

+- [[PCB-tools-dat]]

+

+- [[soldering-tools-dat]]

+

+- [[lab-power-dat]]

+

+- [[meter-current-dat]] - [[meter-voltage-dat]] - [[meter-inductor-dat]] - [[internal-resistance-meter-dat]] - [[meter-power-dat]]

+

+

+- [[multimeter-dat]] - [[oscilloscope-dat]] - [[signal-generator-dat]]

+

+- [[electronic-loader-dat]] - [[battery-tester-dat]] - [[KP182-dat]]

+

+- [[logic-analyzer-dat]]

+

+- [[prototyping-tools-dat]]

+

+

+

+## stock

+

+- [[parts-stock-dat]]

+

+## tools brand

+

+- [[Fluke-dat]] - [[UNI-T-dat]] - [[alientek-dat]]

+

+

+

+

+

+

+

+

+## unsort

+

+- [[logic-analyzer-handheld-dat]] - [[logic-analyzer-bench-dat]]

+

+- [[function-generator-dat]] - [[spectrum-analyzer-dat]]

+

+- [[digital-oscilloscope-dat]] - [[analog-oscilloscope-dat]]

+

+- [[digital-multimeter-dat]] - [[analog-multimeter-dat]]

+

+- [[power-supply-dat]] - [[linear-power-supply-dat]] - [[switching-power-supply-dat]]

+- [[power-analyzer-dat]] - [[power-meter-dat]]

+- [[spectrum-analyzer-dat]] - [[network-analyzer-dat]]

+- [[LCR-meter-dat]] - [[LCR-meter-handheld-dat]] - [[LCR-meter-bench-dat]]

+- [[frequency-counter-dat]] - [[frequency-counter-handheld-dat]] - [[frequency-counter-bench-dat]]

+

+- [[RF-power-meter-dat]] - [[RF-power-meter-handheld-dat]] - [[RF-power-meter-bench-dat]]

+- [[RF-signal-generator-dat]] - [[RF-signal-generator-handheld-dat]] - [[RF-signal-generator-bench-dat]]

+- [[RF-spectrum-analyzer-dat]] - [[RF-spectrum-analyzer-handheld-dat]] - [[RF-spectrum-analyzer-bench-dat]]

+- [[RF-network-analyzer-dat]] - [[RF-network-analyzer-handheld-dat]] - [[RF-network-analyzer-bench-dat]]

+- [[RF-power-supply-dat]] - [[RF-power-supply-handheld-dat]] - [[RF-power-supply-bench-dat]]

+

+## ref

+

+- [[dev-info]]

+# internal-resistance-meter-dat

+

+- [[internal-resistance-dat]] - [[resistor-dat]]

+

+

+## Hioki Resistance Tester (Digital Low Resistance Tester / Micro-ohmmeter)

+

+A professional instrument for precise measurement of low or high-precision resistance in electrical equipment.

+

+**Features (sorted):**

+- High precision: Measures resistance from milliohms to megaohms with minimal error

+- Low resistance measurement: Accurate measurement of low resistance values (mΩ level) in motor windings, cables, contactors, and busbars

+- Portability & recording: Some models are handheld, with data storage and interface for exporting measurement records

+- Safety: Designed for live equipment or industrial environments; some models feature 4-wire (Kelvin) measurement

+

+**Applications (sorted):**

+- Contact resistance measurement in low-voltage distribution equipment

+- Maintenance and inspection of industrial electrical equipment

+- Motor winding testing

+- Transformer wiring inspection

+

+**English Names:**

+- Digital Low Resistance Tester / Micro-ohmmeter

+- Hioki Resistance Tester

+

+

+

+## version plus with multimeter

+

+- [[multimeter-dat]]

+

+UT70A

+

+

+

+

+## TS457

+

+## ED1035

+

+testing - [[18650-dat]]

+

+80m ohm is really bad

+

+

+

+25m ohm is not bad

+

+

+

+

+

+

+## ref

+

+- [[battery-pack-dat]]

+

+- [[internal-resistance-meter]]

+

+- [[tools]]

+

+# lab-power-dat

+

+0~5 A

+

+## ref

+

+- [[lab-power]]

+

+# logic-analyzer-dat

+

+You typically cannot connect a logic analyzer to raw RF data because:

+

+- It’s analog high-frequency RF, not logic-level digital signals

+- Logic analyzers work at MHz range, not GHz

+- The data from the antenna to the chip is demodulated inside the chip, not accessible externally

+

+

+

+

+## DSLogic Plus

+

+- [[bq27541-dat]]

+

+

+

+

+

+# meter-current-dat.md

+

+

+

+

+

+## ref

+

+- [[meter-current-dat]] - [[meter-voltage-dat]]

+

+# meter-voltage-dat.md

+

+- [[SVC1017-dat]]

+

+## wiring

+

+

+

+

+## high voltage meter

+

+- [[high-voltage-dat]]

+

+

+

+

+

+

+

+

+

+## ref

+

+- [[meter-current-dat]] - [[meter-voltage-dat]]

+

+# multimeter-dat

+

+

+

+

+## good list

+

+

+- [[fluke-dat]] - [[Agilent-dat]] Agilent (安捷伦)

+

+- [[Klein-tools-dat]] - [[Extech-dat]] - [[Amprobe-dat]]

+

+- [[UNI-Trend-dat]] - [[mastech-dat]]

+

+- [[victor-dat]]

+

+

+

+## prerequisite

+

+- make sure the testing probe is GOOD, otherwise the measurement will be wrong.

+

+

+## bad list

+

+| | Model | Type/Style | mark | Issue/Note |

+| ---------------- | ------------ | -------------------- | ---- | ------------- |

+| [[UT-trend-dat]] | UT116C | SMD tester | bad | slow response |

+| | winAPEX 118A | Pen-style multimeter | bad | slow response |

+| [[UT-trend-dat]] | UT89XD | General multimeter | ?? | ?? |

+| [[victor-dat]] | VC9808+ | General multimeter | | |

+| [[victor-dat]] | VC830L | General multimeter | | |

+| [[victor-dat]] | VC921 | General multimeter | bad | slow respone |

+

+[[UT-trend-dat]] - UT70B/UT70A/UT70C/UT70D

+

+- [x] [[inductor-dat]]

+

+

+

+

+

+

+## function check list

+

+- [[inductor-dat]]

+

+

+

+

+## DM3058/E Series

+

+DM3058 / DM3058E is an economical 5.5-digit digital multimeter. It is designed for the test requirements of high accuracy, multi-function and automatic measurement. It integrates the functions of automatic measurement, multiple mathematical transformations and any sensor measurement. It provides USB, GPIB (DM3058 only), LAN (DM3058 only) and RS232 interfaces.

+

+https://eu.rigol.com/eu/products/DM_Detail/DM3058

+

+

+

+

+## ref

+

+- 优利德旗下品牌 - 米尼帕ET-2652数字万用表

+

+- [[instrument-dat]]

+

+# parts-stock-dat

+

+- [[PENS014-dat]]

+

+

+ESD bags

+

+- 12x15cm bit small

+- 16x19cm big

+- 16x25cm big

+

+

+

+## ref

+

+- [[tools-dat]]

+

+# prototyping-tools-dat

+

+- [[terminal-clamping-dat]] - [[cable-tools-dat]] - [[cable-dat]]

+

+# terminal clamping

+

+- [[PTOS031-DAT]] - [[PTOS032-DAT]] - [[PTOS033-DAT]]

+

+

+- [[fab-tools-dat]] - [[fab-PCB-soldering-tools-dat]] - [[fab-PCB-tools-dat]]

+