Sequential LED (CB7860E)

The UAA170 integrated circuit is not very common today. This project is for a 303 Circuits from the 90s. The power supply is 12 V.

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Optical Communicator – Receiver (CB25536E)
This is the receiver for the previous circuit we found in the December 1992 Radio Electronics...
Photodiode Amplifier (CB14156E)
We found this configuration with CMOS-compatible output in the 1994 National Semiconductor Linear...
Recording tapes eraser oscillator (CB7303E)
This 70 kHz oscillator is used to erase tapes in pre-recording. The circuit is from 1968 General...