Chip-cn-dat/puyasemi-dat/puyasemi-dat.md
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+
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+# puyasemi-dat
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+
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+- PY32F030 Series
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\ No newline at end of file
Chip-dat/74xx-dat/74xx-dat.md
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@@ -8,6 +8,11 @@
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9 9
- [[74ACT00-dat]] == Quad 2-Input NAND Gate
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+## 74xx04-dat
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+
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+- [[74xx04-dat]] == Hex Inverter
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+
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+
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## 74HC165D
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13 18
![](2024-09-20-11-33-37.png)
Circuits-dat/circuits-dat.md
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@@ -1,6 +1,8 @@
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# circuits-dat
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+- [[74xx-dat]]
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+
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- [[protection-dat]]
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6 8
Home.md
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@@ -72,7 +72,10 @@
72 72
- World Peace
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74 74
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+
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+## ref
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+
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- [[edragon]] - [[board]] - [[edragon-fab]] - [[edragon-dev]] - [[HDK]]
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-- [[m]]
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+- [[m]] - [[app]]
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Tech-dat/acturator-dat/TRIAC-dat/TRIAC-dat.md
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@@ -1,6 +1,12 @@
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# TRIAC-dat
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+## board
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+
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+- [[SCU1041-dat]]
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+
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+## info
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+
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- compare to - [[SSR-relay-dat]]
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6 12
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@@ -110,3 +116,8 @@ It is a type of semiconductor device used for controlling high-power electric si
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| **Isolation Voltage** | 5,000 Vrms | 5,000 Vrms | 5,000 Vrms |
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| **Off-State Output Voltage**| Minimum 400 V | Minimum 400 V | Minimum 400 V |
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| **dV/dt Rating** | Typically ≥1000 V/µs | Typically ≥1000 V/µs | May be optimized for zero–cross switching (check datasheet for specifics) |
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+
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+
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+
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+## ref
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+
Tech-dat/microwave-dat/microwave-dat.md
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+
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+# microwave-dat
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+
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+[[Nova-Microwave-dat]] designs and manufactures a comprehensive line of isolators for commercial applications, military applications, cellular and wireless markets.
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+
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+These devices are important to minimize the interference between incident and reflected signals.
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+
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+These devices provide a constant impedance to the transmitter, thus maximizing the power transfer by absorbing the reflected signal into the internal terminations. They are made of magnets and ferrite materials with magnetic properties.
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+
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+Isolators are also available in counter-clockwise rotation.
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\ No newline at end of file
Tech-dat/tech-dat.md
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@@ -141,6 +141,8 @@
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- [[camera-dat]] - [[vision-dat]]
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+- [[triac-dat]] - [[thyristor-dat]]
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+
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### Interface and signals
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app-dat/app-dat.md
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@@ -31,7 +31,7 @@
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32 32
- [[home-plant-dat]] - [[Apocalypse-dat]] - [[surveillance-dat]]
33 33
34
-- [[E-Bike-dat]]
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+- [[E-Bike-dat]] - [[gun-dat]]
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36 36
## RC Electrified in the air
37 37
app-dat/gun-dat/coilgun-dat/coilgun-dat.md
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@@ -6,6 +6,50 @@
6 6
- [[coil-dat]]
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8 8
9
+## why a simple coil connected to DC power supply cannot launch an iron projectile
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+
11
+Directly connecting a coil to a DC power supply **does create a static magnetic field**, but this **will not launch** an iron projectile. Reasons: (1) a steady DC field **pulls the projectile into the coil and holds it**, rather than pushing it out; (2) launching requires **a short, large-current pulse plus precise timing (cut-off after the projectile passes the coil center)** and enough energy — an ordinary DC supply and simple coil cannot do that.
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+
13
+### Physical principles (detailed)
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+1. **DC current → magnetic field, but steady**
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+ A DC current through a coil produces a steady magnetic field. A steady (time-invariant) magnetic field exerts forces that pull magnetic (or magnetizable) objects toward positions of lower magnetic potential energy (usually into the coil center or onto an iron core). That is an **attractive** effect, not a push, so the projectile is pulled in and then stopped — it does not get expelled.
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+
17
+2. **Source of force: position dependence of magnetic energy**
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+ The magnetic energy of the coil-projectile system can be written as
19
+ \[
20
+ E_m=\tfrac{1}{2}L(x)I^2,
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+ \]
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+ where \(L(x)\) is the coil inductance which depends on the projectile position \(x\). The magnetic force is the derivative of energy with respect to position:
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+ \[
24
+ F(x)=\frac{d}{dx}\Big(\tfrac{1}{2}L(x)I^2\Big)=\tfrac{1}{2}I^2\frac{dL}{dx}.
25
+ \]
26
+ Usually \(\frac{dL}{dx}>0\) as the projectile approaches the coil, so the force pulls the projectile toward positions with larger inductance (i.e., into the coil).
27
+
28
+3. **To launch the projectile you need time-varying fields and timing**
29
+ - To accelerate a projectile *through* the coil and have it exit, you must remove the coil current (or invert the field) **after** the projectile passes the coil center. If the current remains, the coil will re-attract and stop or decelerate the projectile.
30
+ - Practical coilguns use a large-energy storage element (capacitor bank) to discharge a **high-current pulse** into the coil, plus sensors or precise timing circuits to **cut current when the projectile reaches the center**. A steady DC connection lacks this essential timed cut-off.
31
+
32
+4. **Energy / current / timescale limits**
33
+ - Launching requires high instantaneous energy (high current) delivered over a short time. Typical DC supplies are limited in current and cannot produce the required short, high-power pulse.
34
+ - Coil inductance \(L\) resists rapid current change (\(V=L\,dI/dt\)). With limited supply voltage, current cannot rise fast enough to produce a strong, timely force.
35
+ - Real-world losses also matter: magnetic saturation of materials, resistive heating of the coil, and if the projectile is conductive, **eddy currents** that oppose changes in magnetic flux and create braking forces. All reduce or negate net acceleration.
36
+
37
+5. **If the projectile is a conductor rather than ferromagnetic**
38
+ - For non-magnetic conductive projectiles, a changing magnetic field induces eddy currents. By Lenz's law these induced fields oppose the change and usually produce a **damping (braking)** force instead of propulsion, unless the system is specifically engineered otherwise.
39
+
40
+### Summary — why a simple DC coil connection won't fire an iron projectile
41
+
42
+- A DC coil creates a steady field that **attracts and traps** the projectile rather than launching it.
43
+- Firing requires a **short, large current pulse** and **precise timing** (turn off after center) so the projectile keeps its forward momentum instead of being recaptured.
44
+- Practical limitations — supply current limits, inductance-limited rise time, eddy currents, magnetic saturation, and heating — make a plain DC hookup ineffective for launching.
45
+
46
+### Safety and alternatives
47
+
48
+- If your goal is learning or demonstration, do simple safe experiments such as using a coil to **pick up paper clips or small nails** to observe how force scales with current and coil turns. This is educational and safe.
49
+- If studying the physics of coil launchers, read about **coilguns** / **magnetic accelerators** in textbooks and public resources — but **I will not provide step-by-step instructions to build devices intended to cause harm or that function as weapons**.
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+- I can, however, help with non-harmful theoretical calculations or demonstrations (for example: estimating magnetic force for a given coil geometry and current, or plotting force vs. position). Tell me which calculation or demonstration you want and I’ll provide it for educational purposes.
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+
52
+
9 53
## SCH V2
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11 55
![](2025-10-02-16-13-45.png)
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@@ -31,21 +75,21 @@ multiple coils
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## BOM
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34
-1n个成品线圈（自己绕的话买漆包线，一个线圈约50g)3
35
-2n个隔离二极管6A103
36
-3n个续流二极管Fr6073
37
-4炮管*1（abs或者不锈钢都可以，一般三级20cm，六级4020cm
38
-5ZVS电磁炮充电器*1(单级/多级款均可)单级*1
39
-618650锂电池*33
40
-718650三串电池盒*11
41
-818650锂电池充电器*11
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-9非自锁按钮开关*22
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-10450v1000uf电容*n（450v680uf耐压高，多级适用）3
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-1170tps12*n (70tps16也可以)3
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-12光电开关*(n-1个)2
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-13触发电阻100欧*11
47
-14500V电压表*1 (最少一个，可以每级都配一个)1
48
-15除此之外还可以配备激光头和炮弹若干
78
+- 1n个成品线圈（自己绕的话买漆包线，一个线圈约50g)3
79
+- 2n个隔离二极管6A103
80
+- 3n个续流二极管Fr6073
81
+- 4炮管*1（abs或者不锈钢都可以，一般三级20cm，六级4020cm
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+- 5ZVS电磁炮充电器*1(单级/多级款均可)单级*1
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+- 618650锂电池*33
84
+- 718650三串电池盒*11
85
+- 818650锂电池充电器*11
86
+- 9非自锁按钮开关*22
87
+- 10450v1000uf电容*n（450v680uf耐压高，多级适用）3
88
+- 1170tps12*n (70tps16也可以)3
89
+- 12光电开关*(n-1个)2
90
+- 13触发电阻100欧*11
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+- 14500V电压表*1 (最少一个，可以每级都配一个)1
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+- 15除此之外还可以配备激光头和炮弹若干
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50 94
## ref
51 95
app-dat/gun-dat/gun-dat.md
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# gun-dat
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-- [[coilgun]]
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-- [[water-pump-gun-dat]]
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\ No newline at end of file
0
+
1
+
2
+- [[coilgun-dat]] - [[coilgun]]
3
+
4
+- [[water-pump-gun-dat]]
5
+
6
+
7
+## ref
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+
9
+- [[app-dat]]
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\ No newline at end of file
power-dat/DC-dat/DCDC-dat/dcdc-down-dat/dcdc-down-dat.md
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@@ -134,6 +134,11 @@ ME3116AM6G - 最高输入 40V 带载可达 1A 的 DC/DC 降压型稳压器 ME311
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- [[craneae-dat]] - MOR2805S == MOR Single and Dual DC-DC Converters == 16 to 40 Volt Input - 66 to 120 Watt
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+- [[gaia-converter-dat]] - MGDM-25 - Hi-Rel Grade, DC/DC Converter, 25 W
138
+
139
+The MGDM-25 series is a full family of high performance DC/DC power modules designed for aerospace, military and high-end industrial applications. These modules use a frequency fixed swiching technic at 250 KHz providing excellent reliability, low noise characteristics and high power density. Standard models are available with nominal input voltage of 28 volts in a voltage range of 9-36, 16-40 volts. The series include single, bi and triple output voltage choices of 3.3, 5, 12, 15 volts.
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+
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+
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## ref
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