12V x 10A power supply (CB21775E)

This power supply is from a 1977 documentation. The transformers have 11 V secondary with 10 A.

Photodiode Currente Control (2) (CB14643E)
The presented circuit uses a PNP transistor, which can be the BC558. Observe the polarity of the...
Music Synthesizer Generator (CB24744E)
This circuit was found in the May 1983 issue of Radio Electronics magazine. The SSM7046 integrated...
Mechanical Reverberator (CB23995E)
This mechanical reverberator circuit for guitar was found in the February 1970 issue of Radio...