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Build your ultimate vehicle security system and gain complete control with this innovative circuit design. Empower your drive with advanced delay features, instant zone activation, and automatic reset capabilities – transforming your car into a fortress of protection. Unlock the potential for automatic immobilization and light flashing, adding an extra layer of security and convenience.... [read more]

Uncover the hidden integrity of your printed circuit boards with this simple schematic. Detect 0V, voltages from 3V to 30V, and floating components using LEDs and a FET constant-current generator. Build your diagnostic tool and gain confidence in your board’s functionality.... [read more]

Create intense flashing alerts with this simple circuit, driving two 12V 21W car bulbs in flashing mode using a power MOSFET. Ideal for road, traffic, and yard alerts – unleash powerful illumination where mains power is unavailable.... [read more]

Unlock 8 watts of pure audio power with the TDA2030, a cost-effective replacement amplifier perfect for low to medium audio systems. This circuit utilizes a 2030 IC and key components to deliver exceptional sound, maximizing speaker efficiency and ensuring distortion-free listening.... [read more]

Build a responsive relay system controlled by your voice! This project extends a CMOS toggle flip-flop with bandpass filters and a Radio Shack #270-090C condenser microphone, enabling you to switch relays simply by whistling. Discover how to tune the 1700 Hz filters and achieve a remarkable 65x gain for precise control, perfect for innovative audio-triggered circuits.... [read more]

Build a stable 600 Hz low-distortion sinewave oscillator using an RC network and op-amps, achieving a clean 5V p-p output with precise gain control for optimal performance.... [read more]