This circuit amplifies signals from 0.5 Hz to 300 kHz. We found it in an old documentation. Equivalent transistors may be used. The gain is 20 dB.
This circuit is from a technical documentation from the 70s. It makes use of married transistors in a...
This strobe light circuit with incandescent lamp was found in a 1978 publication. We can mount it with...
This circuit produces a square wave signal with the frequency determinated by R1 and C1. The upper limit...