BOM-DAT/Resistor-Dat/resistor-feedback-dat/resistor-feedback-dat.md
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@@ -38,15 +38,15 @@ https://www.digikey.cn/zh/resources/conversion-calculators/conversion-calculator
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## 1.205 x ( 1 + R4 ∕ R5) parallel
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-| R1 | R2 | Rsum |
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-| ---- | ---- | -------- |
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-| 2M | 820K | 581K |
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+| R1 | R2 | Rsum |
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+| -------- | -------- | -------- |
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+| 2M | 820K | 581K |
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| **2M** | **845K** | **594K** |
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-| 1.8M | 845K | 575K |
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-| 1.6M | 910K | 580K |
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-| 2M | **1.8M** | **947K** |
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-| **1.2M** | | 1.2M |
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-| 2M | | 2M |
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+| 1.8M | 845K | 575K |
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+| 1.6M | 910K | 580K |
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+| 2M | **1.8M** | **947K** |
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+| **1.2M** | | 1.2M |
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+| 2M | | 2M |
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2x 1.88 MΩ in parallel ≈ 940 kΩ.
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@@ -65,29 +65,45 @@ for - [[LFP-dat]]
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= 1.205 x ( 1 + 800k ∕ 100k) = 1.205 ⅹ 9 = 10.845V
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= 1.205 x ( 1 + 1000k ∕ 90k) = 1.205 ⅹ 12.11 = 14.6V
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-for - [[li-battery-dat]]
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- = 8.4 / 1.205 - 1 = 5.97, R4 = 5.97 ⅹ R5, if R5 = 100k, R4 = 597k, use 590k
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- = 12.6 / 1.205 - 1 = 9.46, R4 = 9.46 ⅹ R5, if R5 = 100k, R4 = 946k, use 940k
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- = 16.8 / 1.205 - 1 = 12.93, R4 = 12.93 ⅹ R5, if R5 = 100k, R4 = 1293k, use 1.2M + 100k in series
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- = 25.2 / 1.205 - 1 = 19.9, R4 = 19.9 ⅹ R5, if R5 = 100k, R4 = 1990k, use 2M
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+
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+## li-battery
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+
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+- [[resistor-feedback]]
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+
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+
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8.4V
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+
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- if R5 = 100k, R4 = 576k, voltage = 1.205 x (1 + 576k / 100k) = 8.14V
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- if R5 = 100k, R4 = 604k, voltage = 1.205 x (1 + 604k / 100k) = 8.48V
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- if R5 = 110k, R4 = 576k, voltage = 1.205 x (1 + 576k / 110k) = 7.515V
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- if R5 = 95.3k, R4 = 576k, voltage = 1.205 x (1 + 576k / 95.3k) = 8.488V
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+
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+
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- if R5 = 97.6k, R4 = 576k, voltage = 1.205 x (1 + 576k / 97.6k) = 8.316
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12.6V
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+
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- if R5 = 97.6k, voltage = 12.6V, R4 = (12.6 / 1.205 - 1) * R5 = 946k, use 923k
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+
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- if R5 = 97.6k, R5 = 910K, voltage = 1.205 x (1 + 910k / 97.6k) = 12.44V
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16.8V
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- if R5 = 97.6k, voltage = 16.8V, R4 = (16.8 / 1.205 - 1) * R5 = 1263k, use 1.2M
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+
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- if R5 = 97.6k, R4 = 1.2M, voltage = 1.205 x (1 + 1200k / 97.6k) = 16.02V
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+6 * 4.2 = 25.2V
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+
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+- if R5 = 97.6k, R4 = 2M, voltage = 1.205 x (1 + 2000k / 97.6k) = 25.9V
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+- if R5 = 100 k, R4 = 2M, voltage = 1.205 x (1 + 2000k / 100k) = 25.3V
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+
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+
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+
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+## obseleted
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+
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| R4 | R5 | target Vout | actual Vout |
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| ----------------- | ------- | ----------- | ----------- |
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| 576K 1% + 13K 5% | 100K 1% | 8.4V | 8.3 |
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@@ -95,6 +111,15 @@ for - [[li-battery-dat]]
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| 1.2M 1% + 47K 5% | 100K 1% | 16.8V | 16.26 |
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| 1.9M 1% + 47K 5% | 100K 1% | 25.2V | 24.1 |
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+for - [[li-battery-dat]]
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+
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+ = 8.4 / 1.205 - 1 = 5.97, R4 = 5.97 ⅹ R5, if R5 = 100k, R4 = 597k, use 590k
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+ = 12.6 / 1.205 - 1 = 9.46, R4 = 9.46 ⅹ R5, if R5 = 100k, R4 = 946k, use 940k
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+ = 16.8 / 1.205 - 1 = 12.93, R4 = 12.93 ⅹ R5, if R5 = 100k, R4 = 1293k, use 1.2M + 100k in series
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+ = 25.2 / 1.205 - 1 = 19.9, R4 = 19.9 ⅹ R5, if R5 = 100k, R4 = 1990k, use 2M
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+
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+
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+
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## CN3722
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- [[dcdc-down-dat]]
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-- [[CN3305-dat]]
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\ No newline at end of file
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+- [[CN3305-dat]]
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+
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+- [[resistor]]
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\ No newline at end of file
Board-dat/NWL/NWL1037-DAT/2023-09-05-16-22-07.png
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Binary files a/Board-dat/NWL/NWL1037-DAT/2023-09-05-16-22-07.png and /dev/null differ
Board-dat/NWL/NWL1037-DAT/NWL1037-DAT.md
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@@ -13,9 +13,10 @@ CC1101-LSS: Low Power, SPI interface, Spring Coil
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![](2023-09-05-16-21-33.png)
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-## Schematic
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-![](2023-09-05-16-22-07.png)
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+- [[CC1101-dat]]
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+
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+
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- [[NWL1037]]
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\ No newline at end of file
Board-dat/PEN/PENS014-dat/PENS014-dat.md
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@@ -1,6 +1,11 @@
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# PENS014-dat
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+**Note the book is empty, no components included.** Images for demo only.
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+
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+
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## Info
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[product url - SMD Collecting booklet / Sample Book](https://www.electrodragon.com/product/smd-collecting-booklet-sample-book/)
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@@ -15,8 +20,18 @@ Inner pages: Length 17.2 cm x Width 11.8 cm (covered area 7.4 cm)
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Specification 1: Divided into 6 rows on average, each row about 28mm high, especially suitable for slightly wider SMD tape components
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+
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+
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the current selling version is **12-row per page**
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+
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### small size version == 12-row per page
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![](2025-08-20-17-01-37.png)
Chip-cn-dat/CONSONANCE-dat/CONSONANCE-dat.md
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@@ -13,7 +13,6 @@
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-
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## battery management
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- [[CN3302-dat]] - PFM Boost Dual-Cell Lithium Battery Charging Control IC
Chip-cn-dat/chip-cn-dat.md
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- [[RDA-dat]]
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-- [[CONSONANCE-dat]] - [[JDY-dat]]
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+- [[CONSONANCE-dat]]
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+
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+- [[JDY-dat]]
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- [[Zeming-dat]]
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Chip-dat/TI-dat/TI-Network-dat/CC1101-DAT/2023-09-05-16-22-07.png
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Binary files /dev/null and b/Chip-dat/TI-dat/TI-Network-dat/CC1101-DAT/2023-09-05-16-22-07.png differ
Chip-dat/TI-dat/TI-Network-dat/CC1101-DAT/CC1101-DAT.md
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@@ -32,6 +32,9 @@ MSR
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+## Schematic
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+
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+![](2023-09-05-16-22-07.png)
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Network-dat/radio-dat/radio-dat.md
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## ref
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+- [[SDR-dat]]
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+
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- [[network-dat]]
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\ No newline at end of file
app-dat/SDR-dat/SDR-dat.md
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@@ -0,0 +1,13 @@
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+
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+# SDR-dat
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+
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+software defined radio
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+
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+
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+
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+## ref
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+
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+- [[network-dat]]
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+
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+- [[radio-dat]]
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+
power-dat/solar-dat/MPPT-dat/MPPT-dat.md
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@@ -3,6 +3,10 @@
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+## board
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+
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+- [[CN3306-dat]] - [[CN3722-dat]]
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+
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## 1. MPPT: Maximum Power Point Tracking
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**Definition:**
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@@ -58,4 +62,6 @@ CN3306太阳能板最大功率点跟踪端MPPT管脚的电压被调制在1.205V(
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## ref
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-- [[solar-dat]]
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+- [[solar-dat]]
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+
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+- [[resistor-feedback-dat]]
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