This circuit was found in an Electronic Design from the 90s. The circuit uses a type J thermocouple that can measure from -50 to + 100º C. Power is provided by a 3 V lithium battery.
Found in National Semionductor documentation this circuit combines a tone control with an...
This is the traditional configuration of a standard lamp with a rectifier. Only incandescent lamp...
This circuit can be connected to the output of alarms or sirens with the 555, CMOS or TTL,...