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Digital control adjustable integrated regulated power supply

Published:2011/4/12 22:13:00 Author:Nicole | Keyword: digital control, regulated power supply

Digital control adjustable integrated regulated power supply
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Numerical control integrated regulated power supply circuit

Published:2011/4/12 22:58:00 Author:Nicole | Keyword: numerical control, regulated power supply

Numerical control integrated regulated power supply circuit
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15V stabilized voltage power supply circuit adopts controlled silicon to protect

Published:2011/3/30 1:48:00 Author:may | Keyword: stabilized voltage power supply

15V stabilized voltage power supply circuit adopts controlled silicon to protect
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BQ2057 charger circuit using p-channel MOSFET

Published:2011/3/30 4:55:00 Author:may | Keyword: charger, p-channel MOSFET

BQ2057 charger circuit using p-channel MOSFET
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BQ2057 charger circuit using PNP transistor

Published:2011/3/30 4:53:00 Author:may | Keyword: charger, PNP transistor

BQ2057 charger circuit using PNP transistor
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4A/12.3V lithium ion battery charger circuit

Published:2011/3/31 4:09:00 Author:may | Keyword: lithium ion battery charger

4A/12.3V lithium ion battery charger circuit ( LTC4008 as control chip) (View)

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Standard linear switch power supply stabilized voltage supply

Published:2011/3/31 1:15:00 Author:may | Keyword: linear switch power supply, stabilized voltage supply

Standard linear switch power supply stabilized voltage supply
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Shunt regulator circuit

Published:2011/3/30 22:06:00 Author:may | Keyword: Shunt regulator

Shunt regulator circuit
This circuit use two intergrated regulator 7058 parallel connection, every voltage regulator circuit input side all switch-in 0.1µF capacitor to clear high frequency oscillation. (View)

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Light control alarm circuit diagram

Published:2011/4/14 21:01:00 Author:Ecco | Keyword: Light control, alarm circuit

Light control alarm circuit diagram
As a photoresistor, CL5M4 has a high sensitivity to the reducing of light exposure. Usually, the light from the street lights can provide enough ambient illumination. If there was an activity to steal the window in 3.1m of the device, the light would be weakened, the resistance of photosensitive resistor and SCR controlling pulse amplitude would increase. Then the SCR starts regenerative amplification, the relay pulls in, the sound alarm warns. The SCR in the circuit is not used as a switching element. Potentiometer R4 is used to control sensitivity, adjust the R4, to make SCR receive the positive pulse from the AC power, but the pulse amplitude could not make the SCR produce renewable effects. If S2 turns off, the alarm will stop the warning when the light will not change any more. If S2 is closed, the alarm is in self-locking state, the alarm stops warning by cuting off S1. (View)

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Back up supply control circuit

Published:2011/3/31 21:21:00 Author:may | Keyword: Back up supply control

Back up supply control circuit
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2.2~6V output 7V voltage booster circuit

Published:2011/4/1 22:27:00 Author:may | Keyword: 2.2~6V, output 7V, voltage booster

2.2~6V output 7V voltage booster circuit
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Three time base window circuit

Published:2011/3/31 22:37:00 Author:may | Keyword: time base window

Three time base window circuit
7207A crystal controlled timer, generate three precise gating window: 10ms, 100ms and 1s. They can use as time base of cymometer ( such as 7208) , sanction time scale or gating timmer signal. (View)

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3 channel IR-control switch circuit

Published:2011/3/31 22:33:00 Author:may | Keyword: 3 channel, IR-control switch

3 channel IR-control switch circuit
This switch circuit can wireless, directionless siwtch control 3 computers in 30m2 room, power of every controlled device is about 250W. This remote control switch system include transmitter and receiver two parts, there are 3 keystoke on the crust of transmitter, separately control frequency change of 3 channel, thereby control 3 relay pull-in and release of receiver. (View)