88-108 MHz FM Beacon Broadcast Transmitter Circuit This circuit will transmit a continuous audio tone on the FM broadcast band (88-108 MHz) which could used for remote control or security purposes. Circuit draws about 30 mA from a 6-9 volt battery and can be received to about 100 yards. A 555 timer is used to [...]
A light/dark analysis ambit is acutely advantageous and able in a advanced ambit of renewable activity projects from automated lighting to aegis systems. In our commodity Ablaze Dependent Resistor we explained how an LDR can be acclimated in simple circuits to ascendancy accessories according to the ambient levels of lighting – for example, automatically axis [...]
Latching Relay On/Off Switch Circuit The ambit beneath switches AC or DC ability to a amount application an ultra low ability 3v latching broadcast with two coils. The broadcast can handle about 10 amps of current, up to 250vac. Anniversary time the baby pushbutton is pressed, the ambit either latches the broadcast contacts bankrupt or [...]
