This interesting circuit of the 50s uses a fluorescent lamp to obtain a stroboscope useful for the rotation of motors. The circuit uses a power valve to control the 10W fluorescent lamp.
This small power amplifier makes use of an output transformer given its design time. In fact, the...
In this circuit the output current is limited by R3. For a 300 mA current, R3 must have 12 Ω. For...
This circuit has two stable states such that at each instant only one SCR leads. The state change is...