This circuit was found in a 70s documentation. The transistor is from that time. L1 has 4 turns of wire 20 in the form of 3/32 inches and L1 has 10 turns of the same wire,
We find the diagram of this Japanese commercial radio in a documentation from the 1960s. The...
Based on a JFET, this sensitive light relay was found in old English documentation. The supply...
This simple circuit with a neon lamp is from a documentation from the 70s. It indicates whether...