QRP is word in ham radio which means to send signal with low power. It come from Morse code. ‘QRP’ say “lower your power” and this QRP use power rules like: Simple QRP Antenna Tuner Circuit for RF Applications help send signal better. It connect low power radio to antenna. Tuner fix mismatch, stop power […]
Transmitter Circuit
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Building an FM Transmitter Circuit for Car Stereo
Building an FM Transmitter Circuit for Car Stereo is easy way to play music from phone, MP3 or Bluetooth on car FM radio. It sends sound on FM frequency and car radio catches it like normal station. Circuit is simple to use and is good for playing music or podcast in car without special stereo […]
Simple Arduino FM Transmitter Circuit
FM (Frequency Modulation) is a common way to send audio by radio signals. Many people like making FM transmitters with Arduino because DIY electronics is getting popular. In this project for Simple Arduino FM Transmitter Circuit we have used Arduino Uno, KT0803K FM module, 7809 voltage regulator and simple antenna to make FM transmitter. This […]
Long Range IR Transmitter Circuit
Compared to basic circuit this Long Range IR Transmitter Circuit can send IR light farther using easy parts. Main idea is to make IR LED blink light in pulses. Most IR receivers catch specific frequency made by IC 4047. Using more LEDs together or stronger LED gives more IR light, so with better range. This […]
Simple FM Microphone Transmitter Circuit
FM mic transmitter is small device. It changes sound from mic into radio signal. FM radio can hear it in short distance. This Simple FM Microphone Transmitter Circuit uses one NPN BC547 transistor. Even it is small it can send FM signal pretty far. Circuit Working: Parts List: Category Description Quantity Resistors 330Ω 1/4 watt […]
Simple Phone Transmitter Circuit
Simple Phone Transmitter Circuit uses few parts. It take sound from phone talk and changes to signal. Signal goes far using antenna. This circuit is easy to make and works well with landline phone. Circuit Working: Parts List: Category Description Quantity Resistors 10k, 47k, 330Ω (1/4 watt each) 1 each Capacitors Ceramic 47pF 3 Semiconductors […]