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October 3, 2010
This circuit was designed as a warning flasher to alert road users to dangerous situations in the dark. Alternatively, it can act as a bicycle light (subject to traffic regulations and legislation). White LEDs only... [more]
circuit from:http://www.extremecircuits.net/2010/05/high-intensity-led-warning-flasher.html
October 2, 2010
This circuit operates a LED in pulsing mode, i.e. the LED goes from off state, lights up gradually, then dims gradually, etc. This operation mode is obtained by a triangular wave generator formed by two... [more]
circuit from:http://www.extremecircuits.net/2009/08/led-or-lamp-pulsar-circuit.html
October 2, 2010
This circuit was designed to provide that continuous light lamps already wired into a circuit, become flashing. Simply insert the circuit between existing lamp and negative supply. Especially suited for car or panel pilot lights,... [more]
circuit from:http://www.extremecircuits.net/2009/08/led-or-lamp-flasher-circuit.html
October 2, 2010
Here is a simple and powerful LED circuit that can be operated directly from the AC 100 volt to AC 230 Volts mains supply. The circuit can be used as mains power locator or night... [more]
circuit from:http://www.extremecircuits.net/2009/09/mains-operated-led-circuit-schematic.html
October 2, 2010
Most PC enclosures provide only a single LED to indicate hard disk access, with the LED being connected to the motherboard via a two-pin connector. However, this LED only works with IDE drives, and if... [more]
circuit from:http://www.extremecircuits.net/2010/05/multicolor-hd-led.html
October 2, 2010
This novel circuit uses a flashing LED as the clock input for a 4017 decade counter. Typical flashing LEDs (eg, DSE cat Z-4044) flash at about 2Hz so the outputs Q0-Q9 will cycle through at... [more]
circuit from:http://www.extremecircuits.net/2010/05/one-of-nine-sequencer.html
October 2, 2010
Here is a portable, high-power incandescent electric lamp flasher. It is basically a dual flasher (alternating blinker) that can handle two separate 230V AC loads (bulbs L1 and L2). The circuit is fully transistorised and... [more]
circuit from:http://www.extremecircuits.net/2010/05/portable-lamp-flasher.html
October 2, 2010
If you forget to switch off the light after leaving a seldom used room (such as the loft), there’s a strong likelihood that it could remain lit for months, running up an expensive power bill... [more]
circuit from:http://www.extremecircuits.net/2010/05/put-that-light-out.html
October 2, 2010
Ordinary LED flashers turn the LED on and off abruptly, which can get a little irritating after a while. The circuit shown here is more gentle on the eyes: the light intensity changes very slowly... [more]
circuit from:http://www.extremecircuits.net/2010/05/smooth-flasher-circuit-diagram.html
October 2, 2010
The PR4403 is an enhanced cousin of the PR4402 40mA LED driver. It has an extra input called LS which can be taken low to turn the LED on. This makes it very easy to... [more]
circuit from:http://www.extremecircuits.net/2010/05/solar-lamp-using-pr4403.html
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