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Build a breathtaking 300B tube amplifier with this meticulously detailed schematic, featuring 6SN7 complement and powerful Audio Transformer. This design offers exceptional audio performance and is ideal for audiophiles seeking a truly immersive listening experience.... [read more]

Build a sophisticated bike security system with this innovative circuit, featuring an intermittent siren output and automatic reset. Harness the power of an electronic siren (300-400mA) and unlock limitless possibilities with external relays – immobilize your bike, flash lights, and create a truly protective deterrent. This Veroboard design, incorporating Andy’s Asymmetric Timer, empowers you to elevate your security game.... [read more]

Build a robust and reliable 4-stage power supply unit for your electronic circuit testing – providing precise 12V, 9V, 6V, 5V and 18V outputs to safeguard your valuable components and ensure accurate results.... [read more]

Build a versatile 12-15 volt dual polarity power supply perfect for powering op amps and experimenting with dual supply circuits. This easy-to-assemble project uses just a few components and provides a stable, adjustable voltage source for your electronics builds.... [read more]

Build a robust 9-volt audio amplifier with a 500-ohm input impedance and 5 gain, achieving 50 milliwatts of power output. This circuit design offers a stable bias and utilizes a 3.3-ohm resistor for temperature compensation, ensuring consistent performance.... [read more]

Build a superior audio amplifier with this innovative circuit, expertly designed to optimize sound reproduction across all listening levels. This detailed schematic utilizes a simple yet effective design, mirroring the human ear’s frequency sensitivity, creating ideal listening conditions with components like a 10K potentiometer and precision resistors. Unlock exceptional audio clarity and dynamic range for a truly immersive listening experience.... [read more]