This TTL circuit is from a Radio Electronics magazine from February 1973. The circuit must be powered with 5 V and the maximum frequency depends on the TTL integrated circuit.
Found in documentation from the 1980s, this amplifier uses an integrated circuit from the time....
This circuit is from a Radio Electronics from November 1957. The circuit uses a relay depending on the...
It is a simple blinker that simulates the action of an alarm when installed on the dashboard of a...