foxhunt transmitter circuit | Next Electronics

A basic circuit of the transistor UHF radio transmitter with a surface acoustic wave resonator (SAW) is presented. The SAW is utilized as a positive feedback element connected between the transistor's base and an LC network in parallel. In this...

Mini Audio Signal Generator

A small audio test generator is very useful for quickly tracing a signal through an audio unit. Its main purpose is speed rather than refinement. An audio test generator is an essential tool in the field of audio engineering, primarily...

All Transmitter & Receiver schematics

This website was developed to assist students in discovering ideas for their projects or final year projects (FYP). All content presented here is sourced from reliable blogs, websites, and forums. The owner of this website assumes no responsibility for any...

Signal Generator circuit

The output level was set to 3.8V peak to peak. The initial objective was to compare several different operational amplifiers (op-amps) before further optimizing the circuit. The op-amps evaluated were the TL072, LM4562, and OPA2134. The distortion spectra are presented...

HF Mic

This RF circuit operates at 7.68 MHz and is supplied with 48V phantom power. It has been tested with a large diaphragm cardioid capsule designed by Ralf Falk, who is also known for creating a LF tube microphone, and with...

Tuned Rf Wavemeter

L1 and L2 form a tuned transformer with an optimum turns ratio of approximately 1:3. L2 and C1 are used to tune to the desired frequency. The frequency range can extend from 10 kHz to over 200 MHz, depending on...

AB4YD Amateur Radio Page

This project was inspired by a series of QST articles by Hayward, W1PH. The design is based on his April 1962 article, "Have You Tried 160 Lately." The rig features a simple, single-band configuration utilizing 6V6 tubes with regulated voltages,...

making an rf car

This article is authored by Yash Tambi, a Core Committee Member of roboVITics. It discusses RF-controlled robots, which are among the simplest types of robots. The essential components include a few readily available integrated circuits (ICs), a 433 MHz transmitter...

RF wireless allarm magnetic switch PIC16F84

This circuit was formed to create a wireless alarm from a normal magnetic contact. By fixing the magnet to the leaf of a door, or swing of a drawer, it is easy to reveal the opening. To transmit the signal...