Power Failure Alarm (CB6116E)

This circuit, suggested by an Electronics World of 1969, keeps a blinking LED for a while when a power outage occurs. Time depends on capacitor C1.

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Pulse Width to Capacitance Converter (CB6100E)
Suggested by Linear Technology, this 80's circuit makes use of an operational of the time but can...
Voltage Controlled Current Drain (CB5287E)
We find this circuit in a Linear Technology application manual. The circuit can drain up to 1 A of...
Basic Flip Flop Using the 4013 (CB149)
This circuit turns on and off from pulses applied to the CLK input. The output 0 goes to the “’1"...