This circuit makes use of an unusual Analog Devices component today. The circuit is from a 90's documentation. The amplifier has 80 dB gain.
This telegraph microtransmitter for a frequency determined by the coil and the crystal was found...
Using this circuit the lamps glow in sequence in a speed given by the capacitors. The SCRs present a...
This circuit was suggested by a 1967 General Electric manual. The waveforms of the generated...