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CD4046 FM signal generator circuit diagram

Published:2011/9/9 1:48:00 Author:Ecco | Keyword: FM signal generator

CD4046 FM signal generator circuit diagram
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CD4046 square-wave generator circuit diagram

Published:2011/9/9 1:37:00 Author:Ecco | Keyword: square-wave generator

CD4046 square-wave generator circuit diagram
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Switching 5V, 4W regulated DC power supply circuit diagram

Published:2011/9/9 1:50:00 Author:Ecco | Keyword: Switching , 5V, 4W , regulated DC , power supply

Switching 5V, 4W regulated DC power supply circuit diagram
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CD4017 ultrasonic pest repeller circuit diagram

Published:2011/9/9 1:51:00 Author:Ecco | Keyword: ultrasonic pest repeller

CD4017 ultrasonic pest repeller circuit diagram
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ISL6140 internal structure circuit diagram

Published:2011/9/9 1:52:00 Author:Ecco | Keyword: internal structure

ISL6140 internal structure circuit diagram
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Audio power amplifier LM3875 circuit diagram

Published:2011/9/9 1:53:00 Author:Ecco | Keyword: Audio power amplifier

Audio power amplifier LM3875 circuit diagram
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A practical simple battery automatic charger circuit

Published:2011/9/14 21:22:00 Author:TaoXi | Keyword: Practical, simple, battery, automatic charger

A practical simple battery automatic charger circuit
The circuit principle of the charger is as shown in figure 4-18. The 220V AC city electricity is transformed, rectified and filted by this circuit to output the 20V direct current, and this current charges the battery through the three-port voltage stabilizer. The switching circuit TWH8778 can be used to detect the two-end voltage of the battery. When the charging starts, the voltage of battery is not enough to conduct the TWH8778, the equivalent circuit is as shown in figure 4-19(a). The constant current charges the battery, the constant current value I0=12.5/R, R is one resistance value of the R1-R4. When the battery voltage increases to the set value, the circuit of figure 4-19(b) is automatically converted into the circuit of 4-19(c). (View)

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LJC2200 infrared, ultrasonic and radio remote control receiver circuit diagram

Published:2011/9/8 1:11:00 Author:Ecco | Keyword: infrared, ultrasonic , radio , remote control receiver

LJC2200 infrared, ultrasonic and radio remote control receiver circuit diagram
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STK4192 Application circuit diagram

Published:2011/8/31 22:28:00 Author:Ecco | Keyword: Application circuit

STK4192 Application circuit diagram
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LJA7225 logic box circuit diagram

Published:2011/8/31 22:25:00 Author:Ecco | Keyword: logic box

LJA7225 logic box circuit diagram
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STK4301 Typical application circuit diagram

Published:2011/8/31 22:24:00 Author:Ecco | Keyword: Typical application

STK4301 Typical application circuit diagram
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LJA7225 Typical application circuit diagram

Published:2011/8/31 22:15:00 Author:Ecco | Keyword: Typical application

LJA7225 Typical application circuit diagram
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Ford Focus engine starting, cooling, ignition circuit diagram

Published:2011/8/31 22:26:00 Author:Ecco | Keyword: Ford Focus , engine starting, cooling, ignition

Ford Focus engine starting, cooling, ignition circuit diagram
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Charger principle circuit diagram

Published:2011/8/31 22:14:00 Author:Ecco | Keyword: Charger principle

Charger principle circuit diagram

It uses 1 / 10 rated capacity ( 145 mA charging current) to charge for 14 to 16 hours. The charger charging current is about 170 mA, and the charging time is about 12 hours. The required components are: a transformer with power being about 10W and the secondary winding voltage between 12 ~ 15V; 7812 three-terminal voltage regulator integrated circuit; 4 IN4008 diodes ( or a 1A/200V bridge rectifier ), a 2200UF/50V electrolytic capacitor and a 0.1UF homopolar capacitor; a 56 ohm resistor; a battery box which can put four batteries; a piece of board, and many wires. (View)

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Ford Focus glass, window frame and body, rearview mirror circuit diagram

Published:2011/8/31 21:37:00 Author:Ecco | Keyword: Ford Focus , glass, window frame , body , rearview mirror

Ford Focus glass, window frame and body, rearview mirror circuit diagram
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Simple power supply circuit diagram made by LM317

Published:2011/8/31 21:26:00 Author:Ecco | Keyword: Simple power supply

Simple power supply circuit diagram made by LM317
LM317 circuit consists of four components, and four groups of output potential is adjusted by R2. Adjusting R2 can make IC4 output potential be continuously adjustable between the 1.25-30V, while IC1-IC3 connected to it in series output potential also changes resulting in four groups of stable DC voltage between 1.25-120V. (View)