Synchronized AC switch (CB9261E)

Found in a 1965 General Electric circuit manual, this circuit uses SCRs from that time. Modern equivalents according to the power can be used.

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7 to 15 V protected regulator (CB8679E)
Found in a 1964 Electronic Design, this circuit must use transistors according to the supplied...
Motor Control (CB21355E)
Found in an English publication, this control is intended for 220 V mains powered motors. However, it...
General Purpose Preamplifier (CB925E)
This simple preamplifier with two transistors may be used in a wide range of applications. The...