Electronic Relay (CB14743E)

This assembly is from 1957 from a Raytheon manual, but can be modernized using a BC548, 6 V power supply and common 100 mA relays.

| Clique na imagem para ampliar |

Frequency Standard (CB206E)
The circuit shown in Figure bellow generates frequencies of 50 Hz, 100 Hz, and 200 Hz. The circuit uses a...
Tunable Notch Filter (CB14923E)
This circuit rejects frequencies around 1 kHz and can be adjusted using C1. Equivalent operational...
FM Transmitter Multiplex Mixer (CB18779E)
From stereo inputs, this circuit generates a modulated and multiplexed signal to be transmitted in the FM...