Wireless Doorbell Circuit Diagram. All transistors are 2n3563 the u shape coil is a single half turn using a 1mm copper wire with 5mm diameter the most fundamental constituent is the transistor. The circuit of the wireless bell shown here is easy to built and using only few easy to find low cost components.
Wiring diagram for a two chime doorbell wiring for two doors is the same as for one with the transformer hardwired to the 120 volt source from a house circuit. Wired and wireless battery operated. A um66 melody generator is connected at the output of the receiver circuit which will be activated when the receiver circuit receives signals from the transmitter.
The tank circuit is a single turn coil and a small capacitor 5p 4p in parallel.
Transmitter this transmitter section is designed around oscillator transistor bf194b t 2 followed by two transistor bc148 t 1 and t 3. The circuit is actually radiating from the printed track of the tank circuit. All transistors are 2n3563 the u shape coil is a single half turn using a 1mm copper wire with 5mm diameter the most fundamental constituent is the transistor. The circuit of the wireless bell shown here is easy to built and using only few easy to find low cost components.
