Circuit-Projects.com New Projects
4 Band, 5 Band and 6 Band Resistor Calculator Tool
Graphical resistor calculator tool.Quickly understand the resistor color code.
PCB Trace Width Calculator
Internaland External PCB Trace calculator tool.
Wire Self Inductance Calculator
Wire, Parallel Wire, Coax, Wire over Plane, Loop, Rectangle Loop, Coil, Broadside Trace, and Edge Coupled Traces
RF (Radio Frequency) Circuits

RC Pulse Generator

Generating R/C  Style Pulses

The purpose of the project is to measure resistance values and generate R/C style pulses suitable for driving servos or testing R/C controlled robots without the transmitter as it uses an Atmel AT90S2313 AVR processor.

FM Receiver with a Single Transistor

FM  Receiver with a Single Transistor

This project contains a very unique one transistor FM receiver  accompanied by homemade air-core coils and a homemade fixed capacitor.

Building the Simplest TV Transmitter

Building  the Simplest TV Transmitter

The project aims to create the simplest TV transmitter from the simples FM transmitter project by just changing the input from the audio to the video and checking the TV signal.

SSB Transceiver Known as Five by Twenty

SSB  Transceiver Known as Five by Twenty

The project consists of 5 vacuum tubes without ICs or transistors for making a true SSB QRP transceiver for 20m Ham band.

Cell Phone Used for Remotely Starting a Car

Cell Phone Used for Remotely Starting a Car

The purpose of the project is to remote start a car using a cell phone by removing the vibration motor and connecting some circuitry so the car can get warmed up ahead of time.

Wireless Doorbell Using Antique Phone

Wireless Doorbell Using Antique Phone

The project aims to create a wireless doorbell that consists of subscriber line interface circuit, Arduino, antique phone, and battery-operated doorbell.


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