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DC Motor Control Using a Single Switch. This simple circuit allows for the operation of a DC motor in both clockwise and counterclockwise directions, as well as stopping it using a single switch. The circuit utilizes non-latching push button...
This section provides step-by-step instructions along with images for constructing an Ultrasonic Proximity Transmitter. Due to the simplicity of the circuit, only a schematic for the sensor is presented here. The objective of this tutorial is to assist others...
The TX200 is an advanced and significantly larger VFO/VCO FM transmitter, recognized as one of the best transmitters available. It is a 200mW FM transmitter designed for stereo PLL applications, providing a wide range for broadcasting music throughout a...
The final article on bipolar junction transistors (BJT) presents a variety of circuits, some practical and others more experimental. These circuits are capable of amplifying signals, filtering high and low frequencies, generating white noise, and flashing lamps. They can...
The schematics on this page are provided strictly for educational purposes. If anyone intends to use these designs for profit, they are required by law to obtain permission from the legal owner(s) of the design and comply with any...
The circuit functions as a radio frequency (RF) oscillator, operating around 100 MHz. Audio signals captured and amplified by an electret microphone are input into an audio amplifier stage constructed with the first transistor. The output from the collector...
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