Fan automatic control circuit


Posted on Mar 28, 2007

Box circuit) bistable circuit, each bistable circuit is a single bond by the control output high and low level. When the circuit instant access electricity, electricity through


Fan automatic control circuit
Click here to download the full size of the above Circuit.

R13, cl, buck, VD, VD2 full-wave rectification, ZD, ZDz secondary regulator, then by VTs electronic filtering, got 8.V DC voltage. Because the capacitance C., C3, C, not the voltage across the energy mutation, so the IC, the input 1,5,11 pin is low, the corresponding inverter output terminal 6, 10 feet high, so each the output of flip-flop circuit terminal 4, 8, 12 feet low. Thus, the transistor VT, VT2, VT4 base is extremely high, VT VT,, VT4 off, the VT3 base is extremely low, VT3 conduction. Because VT4 close, so VT3 no collector current, therefore, the thyristor vs, VS2, VS3 no trigger current is turned off, lights L is not lit, the motor M does not turn. And the same time the capacitor C2, C4, C6 via a resistor feet, R4, Rg charged within about 0.1 8 can be charged to the supply voltage 8.5 V.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Balanced Line Driver & Receiver
Arduino-based AVR High Voltage Programmer
Christmas Star with LEDs
LCD power supply circuit
Speakers
Voltmeter Ammeter
transistors Problems with Wien Bridge oscillator circuit simulation in Mutisim
am transmitter circuit
accurate reaction timer
Electronic Die
Lead Acid Battery Charger #2
IR Remote Control Modulation Detector
electronic door buzzer circuit schematic
HD44780 Character LCD Displays Tutorial
Atmel AVR Microcontroller projects
Differential amplifier circuit four connection methods and compare the characteristics of a



Top