radio ‹ BUILD CIRCUIT

2

How to use electret microphone

Dec 06 in LDR Engineering Written by: Sagar

THE TERMINAL WITH A MARK IS NEGATIVE AND THE TERMINAL WITHOUT MARK IS POSITIVE

4

How to make FM transmitter

Jan 26 in LDR Engineering Written by: Sagar

This tutorial is for making simplest FM transmitter using one transistor. VC1 is a small, screw-adjustable, trimmer capacitor and its rating should be around 10-100pF. Set your FM receiver for a clear, blank station. Then, with a non-conductive tool, adjust the capacitor for the clearest reception, rotate it till the receiver receives a sound from the microphone of transmitter. Use the following formula for determining the frequency. You need following components for this experiment: Transistor-...

1

FM transmitter and Dark sensor

Nov 17 in LDR Engineering Written by: Sagar

A dark sensor can be converted to a simple FM transmitter using the following components. This FM transmitter is very sensitive and it has transmitting range of 30 meters.

0

AM receiver from dark sensor

Nov 17 in LDR Engineering Written by: Sagar

The Darlington transistor (often called a Darlington pair) is a semiconductor device which combines two bipolar transistors in a single device so that the current amplified by the first is amplified further by the second. This configuration gives a high current gain (written β, hfe, or hFE) and can take less space than two separate transistors because the two transistors can use a shared collector. Integrated circuit packages are available, but it is still common also to use two separate...

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How to use electret microphone

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radio

How to use electret microphone

How to make FM transmitter

FM transmitter and Dark sensor

AM receiver from dark sensor

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