This small regulated power supply was found in a 1963 General Electric documentation. The special zener diode transistor can be replaced with an equivalent discrete configuration.
This 80's Motorola circuit can generate 100 MHz signals, but they can reach 200 MHz with the...
This is a basic astable circuit using the 555 IC and driving two LEDs. The phase on a rate giving...
This power supply provides a 1.5 V voltage from the 6.3 V 6 V secondary of a common transformer. The...