Latched TTL Switch (CB1474E)

We found this circuit in a 1975 radio amateur documentation. The circuit uses TTL technology and must be powered with 5V. The circuit is noise proof.

Stereo Headphones Amplifier (CB982E)
The circuit presented in the figure is an amplifier for stereo sources with the Maxim MAX9723...
Picoammeter (CB6194E)
This 80's General Electric circuit is guarded by the noise-guard for operating current. The...
Sinusoidal descrambler (CB6198E)
This circuit was obtained from an 80's Radio Electronics. The circuit decodes “scrambled” or...