Quadrature detector (CB9410E)

We found this circuit in General Electric's documentation from 1968. The integrated circuit is from that time, uncommon today.

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LM377 Stereo Amplifier (CB25938E)
The figure shows an application of the LM377 in a small inverting stereo amplifier with output...
500 MHz Oscillator (CB9393E)
This 500 MHz oscillator has an output power of 1 W when powered by a 20 V source. The circuit was...
Headphone Amplifier (CB15592E)
We can use this amplifier with low impedance headphones with good performance. Possible...