This circuit is from a 1965 Motorola manual. It can be implemented with a common 2N2646 and a 106 Series SCR without problems. The pulse transformer has a 1: 1 turn ratio.
This circuit was obtained from an Electronic Design from the 90's. The circuit generates signals at a...
This simple Hartley circuit can generate two tones depending on the adjustment of the trimpots. The...
Using the CMOS 4046 IC this motor control was found in November 1984 Radio Electronics magazine. The...