This circuit is used to light a 20 W fluorescent lamp from the 12 V of a car battery. The transformer must have the current according to the application. The circuit operates at 1.5 kHz.
When the voltage exceeds the value given by the zener, this circuit from a 1990 documentation...
In the figures we have an infrared transmitter with a BC337 switching transistor that must be...
This circuit was found in Motorola documentation from 1969. The transistors are from that time. The...