Posted on Jan 17, 2013

The output voltage changes approximately linearly up to 20 KV as the input voltage is varied from 0 to 5 V. The oscillator is tuned by a 5-0 potentiometer to peak the output voltage at the frequency of maximum transformer response between 45 and 55 kHz. The feedback voltage is applied through a 100-KO resistor, an op amp, and a comparator to a high-voltage amplifier. A diode and varistors on the primary side of the transformer protect the output transistor.

Click here to download the full size of the above Circuit.

The transformer is a flyback-type used in color-television sets. A feedback loop balances between the high-voltage output and the low-voltage input.

Leave Comment

characters left:

New Circuits



Popular Circuits

Geiger Counter Ii Circuit
Arduino High Voltage Detector
Power cipher scheme on the basis of TMS320C6678 DSP
automatic 12v lead acid battery charger
small general purpose audio
Laser Alarm
Wide band high frequency amplifier circuit
LB1948M motor control driver electronic circuit design
Brushless DC motor control circuit