Active Integrator (CB24390E)

This circuit from July 1975 Radio Electronics uses any operating system with a symmetrical source. The waveform is shown on the side of the diagram.

| Clique na imagem para ampliar |

Zero crossing switch (CB6852E)
Found in Motorola documentation from the 90s, this circuit makes use of a triac from that time. The...
Signal injector (CB22526E)
This transistorized signal injector was one of the first that we found using the well-known...
Mini amplifier 2N301 (CB20529E)
This 200-mW amplifier uses one of the first commercial power transistors. The circuit is from a...