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Index 304

Proportion temperature regulator circuit with integrated flip-flop TDAl023

Published:2011/3/22 22:59:00 Author:Jessie | Keyword: Proportion temperature regulator, integrated flip-flop

Proportion temperature regulator circuit with integrated flip-flop TDAl023
This circuit can be used to control the 5℃ to 35℃indoor temperature or other heating equipments. The maximum heating power depends on its thyristor,this one issuitable for 2kW power, and thyristor is BT139. Temperature is controlledby the bridge road which composed by thermistors, resistance R1 and potentiometer Rp, the actual voltage and given voltage respectively adds on the U6 and U9 of integrated flip-flop TDA1023. If the room temperature is far belowthe given temperature,heating machine workswith all the power. If the room temperature is 1K differ from the given temperature,the proportional adjustment will be achieved. (View)

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Two-seat temperature regulator circuit with schmitt toggle

Published:2011/3/22 23:00:00 Author:Jessie | Keyword: temperature regulator circuit, schmitt toggle

Two-seat temperature regulator circuit with schmitt toggle
Temperature sensor adopts thermal resistor, it's inside measure current approximates constant measuring current. At low temperatures, thermistors's over voltage is high,current flows through the transistor onthe left of Schmitt toggle, and relay release. The heating device which has to be adjusted should contact relay's closed point too. (View)

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Transistor amplifier multiples test circuits

Published:2011/3/24 3:20:00 Author:Jessie | Keyword: Transistor, amplifier multiples test

Transistor amplifier multiples test circuits
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Transistor fast measurememnt and adjustment circuit

Published:2011/3/24 3:19:00 Author:Jessie | Keyword: transistor, measurememnt, adjustment

Transistor fast measurememnt and adjustment circuit
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Bridge type picked up horn protection circuit (1)

Published:2011/3/23 3:57:00 Author:Jessie | Keyword: horn protection

Bridge type picked up horn protection circuit (1)
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Bridge type picked up horn protection circuit (3)

Published:2011/3/23 3:58:00 Author:Jessie | Keyword: horn protection

Bridge type picked up horn protection circuit (3)
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Complementary picked up horn protection circuit

Published:2011/3/23 3:54:00 Author:Jessie | Keyword: horn protection

Complementary picked up horn protection circuit
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Over-voltage protection circuit

Published:2011/3/23 3:53:00 Author:Jessie | Keyword: Over-voltage, protection

Over-voltage protection circuit
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AC over voltage, over current protection circuit

Published:2011/3/24 1:16:00 Author:Jessie | Keyword: AC, over voltage, over current, protection

AC over voltage, over current protection circuit
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Voltage stabilizer diode tested by manostat and ammeter

Published:2011/3/23 3:49:00 Author:Jessie | Keyword: voltage stabilizer diode, manostat, ammeter

Voltage stabilizer diode tested by manostat and ammeter
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Self recover over-voltage protection circuit

Published:2011/3/23 3:50:00 Author:Jessie | Keyword: self recover, over-voltage protection

Self recover over-voltage protection circuit
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Mature low-cost average current circuit

Published:2011/3/24 0:45:00 Author:Jessie | Keyword: average current

Mature low-cost average current circuit
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H type winding tap speed circuit

Published:2011/3/27 22:40:00 Author:may | Keyword: H type winding tap speed

H type winding tap speed circuit is shown in the diagram: (View)

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The simplest bean flow motor speed adjustment circuit

Published:2011/3/23 2:47:00 Author:Jessie | Keyword: bean flow motor, speed adjustment

The simplest bean flow motor speed adjustment circuit
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AX5112 Fan multi-function remote control circuit

Published:2011/3/27 22:21:00 Author:may | Keyword: Fan multi-function remote control

AX5112 Fan multi-function remote control circuit is shown in the diagram: (View)

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Limit temperature music told circuit with TL431

Published:2011/3/23 1:13:00 Author:Jessie | Keyword: limit temperature, music told

Limit temperature music told circuit with TL431
Circuit as shown, it is composed by temperature control threshold switch circuit, SCR trigger circuit and music sound circuit, etc. IC1(TL431) is a high precision voltage stabilizer integrated circuit. IC2 use music IC HY-1(or HY-100), which adopts flake black paste soft encapsulation structure, and it has a famous song reservoir on the chip. RTis anegative temperature coefficient thermistors, under normal temperature,its value is43k Ω. (View)