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This infrared alarm barrier is designed to detect individuals passing through doorways, corridors, and small gates. The transmitter emits a beam of infrared light that is invisible to the human eye. When the light beam is interrupted by a...
This is the design circuit diagram of an ultrasonic mosquito repeller. The circuit operates based on the theory that insects, such as mosquitoes, can be repelled by sound frequencies in the ultrasonic range (above 20 kHz). The circuit utilizes...
A simple X-band radar detector can indicate changes in RF radiation strength at levels as low as 2 mW/cm². When radiation strikes the detector diode, it generates a voltage at the input of an amplifier. The gain of this...
This FM transmitter electronic project operates in the FM band with a transmission power of approximately 250 mW. The circuit is straightforward and utilizes common transistors and electronic components. The T1 transistor, which may be a BC107, BC171, or...
The following circuit illustrates a 5 Zone Anti-Theft Circuit Diagram. This circuit is based on the CMOS 4050B IC. Features: the system may comprise in... The 5 Zone Anti-Theft Circuit utilizes the CMOS 4050B integrated circuit, which is a hex...
The AA-7 active antenna consists of two active components: Q1 (an MFE201 N-channel dual-gate FET) and Q2 (a 2SC2570 VHF silicon transistor), which form the foundation for two independent, switchable RF preamplifiers. The AA-7 active antenna is designed to enhance...
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