With the capacitor used, this circuit provides delays of 40 to 60 seconds. Larger capacitors can be used, and the SCR supports an equivalent. The circuit is from the 1977 RC semiconductor manual.
Found in Motorola documentation from 1969, this circuit, compliant sensor and time network can...
This circuit generates a high voltage of the order of 250 to 300 V from a 12 V battery to power a...
This circuit, suitable for tube equipment, was found in an old documentation. It uses a high...