Timer for enlargers (CB8301E)

From the time when photographs developed on paper could be enlarged, this circuit was found in a 1960s General Electric documentation.

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Matching antenna (CB7458E)
The coil and sockets of this circuit found in a QST depend on the frequency band that is intended...
Deviation meter (CB8223E)
Indicated for discriminators adjustment in FM and VHF receivers, this circuit was found in a 90s...
DRV401 Q1 Signal Conditioner For Magnetic Sensors
Mouser Electronics is making available the Texas Instruments DRV401 Q1 integrated circuit, a...