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  • 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.

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  1. Electronic Projects 67
    1. Alarms 1
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    6. Light/Laser 0
    7. Microcontrollers 8
    8. Power Supply 21
    9. Remote Control 3
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Top resources

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Stereo Digital FM Transmitter Circuit
Stereo Digital FM Transmitter Circuit
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30A AC Soft Starter (Inrush Current Limiter) Circuit with Fail-Safe
30A AC Soft Starter (Inrush Current Limiter) Circuit with Fail-Safe
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Two Chip Quadrature Decoder
Two IC chips decode rotary quadrature encoder signals
5.00 star(s) 1 ratings
Updated
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How to Easily Detect a Failed Capacitor
How to Easily Detect a Failed Capacitor
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Double Lithium-Ion/Lithium-Polymer USB Type-C Charger
Double Lithium-Ion/Lithium-Polymer USB Type-C Charger
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Updated
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A Portable White Noise Generator Circuit
A Portable White Noise Generator Circuit
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Cooling FAN Controller Using an LM35 (No MCU)
Cooling FAN Controller Using an LM35 (No MCU)
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Sallen-Key Active-Filter Without an Op Amp
A Sallen-Key Active-Filter can be built using BJTs instead of an op amp
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Altium Designer 5 Useful Design/Routing Tips
Altium Designer 5 Useful Design/Routing Tips
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Digital One-Shot With Selectable Pulse-Width
All digital one-shot circuit generates precise, selectable pulse-widths
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Digital One-Shot Using Two Flip-Flops
Digital one-shot generates precise pulse width with no RC components.
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Analog Multiplier Using PWM
1-Quadrant Analog Multiplier Circuit Uses PMW Circuit For DC to Low Frequency Signals
4.00 star(s) 1 ratings
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Digital FM Receiver using Arduino and TEA5767
Digital FM Receiver using Arduino and TEA5767
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Open Source Hand Sanitizer Dispenser with Laser-Cut Enclosure [Pro]
Open Source Hand Sanitizer Dispenser with Laser-Cut Enclosure [Pro]
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Dog Bowl Monitor
Dog Bowl Monitor using Simple Weight Scales and HX711 Sensor
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AC/DC Soft Starter
AC/DC Soft Starter
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555 VCO With Wide Range
555 VCO (Voltage Controlled Oscillator) uses constant current control to give wide control range.
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NiZn Battery Charger With Auto Cutoff Using LM317
Charger performs recommended charging function for rechargeable NiZn batteries
5.00 star(s) 3 ratings
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LM317 12V Lead-Acid Battery Charger With 3-Step Auto CC/CV and Trickle-Charge
Lead-acid battery charger using LM317 provides auto CC charge, CV top-off, and final trickle-charge
5.00 star(s) 2 ratings
Updated
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Simple Push-Button Power On/Off Circuit With Delay
PB latch circuit provides on/off delay function to prevent accidental power switching
0.00 star(s) 0 ratings
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