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Jogging Timer
Jogging Timer
November 8, 2010

This circuit was developed since a number of visitors of this website requested a timer capable of emitting a beep after one, two, three minutes and so on, for jogging purposes. [more]

Fancontrol
Fancontrol
November 7, 2010

Fancontrol [more]

Dual Polarity Power Supply
Dual Polarity Power Supply
November 2, 2010

This dual polarity power supply is easy to build, requires few parts, and is adjustable from 0-15 volts. It is great for powering op amp circuits, as well as other circuits that require a dual... [more]

Economy radar detector
Economy radar detector
November 2, 2010

This circuit uses a 1458 dual op-amp to form a radar detector. [more]

IR Remote Control Tester
IR Remote Control Tester
October 31, 2010

IR Remote Control Tester [more]

LED Chaser
LED Chaser
October 31, 2010

This schematic is version of a simple 10 LED chaser. There is no 555 timer used because at my local electronics store they are over $4 Cdn. Instead, an oscillator made up of two sections... [more]

Infa-Red Remote Control
Infa-Red Remote Control
October 31, 2010

his remote transmits a tone using an infa-red LED. This tone is decoded by the receiver. Since the receiver only switches when it "hears" the tone, there are no accidental activations. [more]

Infra Red Switch
Infra Red Switch
October 31, 2010

This is a single channel (on / off) universal switch that may be used with any Infra Red remote control that uses wavelengths between 850-950nm. [more]

LED or Lamp Flasher
LED or Lamp Flasher
October 29, 2010

Minimum parts counting Designed for 3V battery operation [more]

LEDs or Lamps Sequencer
LEDs or Lamps Sequencer
October 29, 2010

The purpose of this circuit was to create a ring in which LEDs or Lamps illuminate sequentially. Its main feature is a high versatility: you can build a loop containing any number of LEDs or... [more]



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