The transistor can be a BC548 and the coil has the following characteristics for 1 MHz. L1 has 80 turns of wire 28 in a ferrite rod and L2 of 30 and 40 turns.
The purpose of this circuit is to re-trigger slow scan circuits used in the 1980s on low frequency...
In the previous circuit (CB15632E) the steps just go up. To obtain ascending and descending cycles...
This circuit is from an old Japanese documentation from the 60s. The circuit uses transistors from...