With a mains-rated transformer and 1:1 winding this benchtop circuit was found in the January 1995 issue of Electronics Now magazine.
This optical coupler for short distances is powered by 12 V which is the voltage of the lamp and...
With the components indicated, the circuit oscillates at 20 MHz. The coils and capacitors can be...
This filter eliminates the rumble of the motor of a record player when recovering this type of...