This simple SCR delay circuit for activating a relay was found in documentation from the 1980s. The components used are common today.
This circuit decodes signals received in SSB (Single Side Band) obtaining an audio signal for...
With a 120 ohms resistor this circuit can also be used as a shield for 3.3 V output voltages. The...
This circuit is from a 1966 American documentation. The circuit uses a photo-FET, an unusual...