The integrated circuits used in this configuration are not common today. The circuit is from the 1983 Intersil Databook. The indicator is 8 digits.
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...