This circuit is used to light a 20 W fluorescent lamp from the 12 V of a car battery. The transformer must have the current according to the application. The circuit operates at 1.5 kHz.
This sensor circuit from a 1967 Ferranti documentation uses components from the era. The circuit...
This is the receiver for the previous circuit transmitter. Similarly, no information about the...
Found in a 90s Popular Electronics, this circuit uses two PLL tone recognizers to trigger by touch an...