phase control circuit


Posted on Feb 5, 2014

This is a simple design schematic circuit for phase control circuit. The circuit can be used to control the power delivered to an AC load. The phase control circuit can control the AC waveform, cutting the cycle to give full cycle, half cycle, zero cycle, or somewhere in between. You can say this circuit is similar to a dimmer circuit, but the swi


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

tching is synchronized with the zero crossing of the waveform. This circuit is works using based on IC U208B. This is the figure of the circuit. The benefit of switching the power in zero crossing condition is that the triacs doesn`t suffer power dissipation, thus increasing the overall efficiency. This phase control circuit is suitable for brushed AC motor, heater filament, or incandescent lamps. The IC U208B is designed as a phase control circuit in bipolar technology with internal supply-voltage monitoring. As the voltage is built up, uncontrolled output pulses are avoided by internal monitoring. Furthermore, it has internal-current and voltage synchronization. It is recommended as a low cost open-loop control. [Schematic diagram source: TEMIC TELEFUNKEN Microelectronic Application Notes]




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

200 watt Audio amplifier with STK4050
Telephone Intercom
RC transmitter with MC68HC711
High-performance-video-switch
12 Volt Lead Acid Battery Meter Led
Square Wave Generator
DC motor speed controller with 555 timer
Electronic Voltmeters
SENSITIVE RF VOLTMETER
Random Access Memories
OPA606 capacitive load isolation buffer



Top