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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Electronic Projects

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Watchdog timer circuits, will timeout on either high or low hang
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Single +output plus dual +/- tracking output supply using common 3-terminal regulators goes to 0V.
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MOSFET bridge for efficient resistive load rectification, or indifference to input power polarity.
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PWM allows easy control of linear regulator output voltage for μP based power supplies
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CD4106 PWM circuit uses only 2 diodes, 1 capacitor, and 1 potentiometer
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Circuit generates Av=+1 with simple offset calculation using std. resistor values
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PWM circuit has voltage control of 0% to 100% duty-cycle
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Constant-current hysteretic buck regulator supply for high power LEDs, efficiency of 90%
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MOSFET Bridge Rectifier gives high efficiency for low voltage, high current AC-DC supplies
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Linear power supply core theory plus circuits that can be adapted to suit your application
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Solid-state discrete AC/DC relay uses MOSFETs for low on-voltage with opto-isolated control input
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How to select power devices and specify heatsinking
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Rework Station, Component Salvage
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Design and build practical electromagnets using simplified theory and formulae
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Core Equipment 2016-11-26
What equipment do you need to get started in electronics
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Simple micropowr circuit to protect batteries from under voltage
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A simple circuit to get down to zero volts with a standard three terminal regulator
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AC/DC Low-Side AC Switch With Low ON Resistance Uses Two N-MOSFETs and One PNP Transistor
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Two relationships can simplify capacitor and inductor voltage and current calculations
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