Introduction Have you ever missed an important phone call because you were in another room or couldn’t hear the ringtone? The phone repeater circuit can solve this problem by expanding the range of your landline … Read more
telephone
Introduction Making a simple telephone amplifier circuit can be a fun and educational project for anyone interested in electronics. By following a few simple steps, you can build a circuit that amplifies the sound from … Read more
Simple Telephone Amplifier Circuit
The telephone In-Use indicator is a simple circuit made using transistor 9014 and a diode bridge. It has an LED attached to it when a telephone is in use this LED glows. Hardware Required S.no … Read more
Telephone In-Use Indicator
Introduction A telephone number dialing method in which tones of varying pitch matching the digits in the dialed number are electronically created by pressing pushbuttons is known as a tone dialer. Distinct tones are used … Read more
Tone Dialer Circuit using TCM5087
In this tutorial, we are making a very simple and useful project of a Telephone ring detector circuit. The purpose of this circuit is to activate a loud buzzer when the phone rings or it … Read more
Telephone Ring Detector using PC817 Optocoupler
Here is the simple and easy DIY tutorial on FM telephone transmitters, which is going to demonstrate in detail. The FM telephone transmitter circuit is built on a PC board that is portable and can … Read more
FM Telephone Transmitter using 2SA933 Transistor
Telephone line tester circuit is more like a meter. Also, it is a very simple circuit involving just few resistors, a switch and an ammeter. Hardware Required S.no Components Value Qty 1. Ammeter 0-1mA 1 … Read more
Simple Telephone Line Tester Circuit
The telephone amplifier circuit, as its name suggests, amplifies the incoming calls to be heard in a room. while in conversation with a distant subscriber the voice is so faint that is barely heard, hence, … Read more