This two-transistor circuit was found in a 1966 US documentation. The power transistors are of the time. The system is intended for cars with contact breaker.
Found in a 1967 Ferranti documentation, this circuit uses a LDR from that time as a sensor....
This low-pass filter was found in an American publication from the 80's. The circuit uses an...
Who is the fastest? This circuit with neon lamp is powered directly by the network (there is no...