Flash-activated flash (CB6749E)

This circuit was suggested by General Electric in 1970 documentation. It makes use of a photo-SCR or LASCR, an uncommon component today.

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Shortwave receiver (CB21636E)
This transistorized receiver was found in Popular Electronics from February 1968. Transistors are...
Sequential Whistler (CB16611E)
This sound effect circuit was found in a 1987 publication. It is a circuit that drives a set of...
Current to Voltage Converter (CB14604E)
The circuit shown is from 1997 Linear Technology Applications. The components used were common at the...