Post Views: 380 If you have to come to this page directly from a search site, please go to thisContinue reading
Post Views: 1,008 CRYSTAL SET The simplest radio receiver, known as a Crystal Set, consists of nothing more than a coil, tuningContinue reading
Post Views: 523 An electret is a permanently charged dielectric. It is made by heating a ceramic material, placing itContinue reading
Post Views: 1,915 After getting several comments from young electronic students , I am rewriting this article to make theContinue reading
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.Continue reading
In this case, LDR has been replaced with capacitor C1-0.01uF and resistor R3-1K has been replaced with L1 & VC1. In place of a LED, a Piezo Diaphragm has been kept.
We just need to add inductor, capacitor and a piezo diaphragm to convert a dark detector to an AM radio.Continue reading