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The circuit presented here can be used for connecting two telephones in parallel and also as a 2-line intercom. Usually a single telephone i... -
Strip LEDs are available in different colours powered by direct current (DC) source. These LEDs are available as surface mount devices with... -
The Maxim MAX 6665 (www.maxim-ic.com) provides a complete temperature-dependent fan controller. It can switch fans operating at voltage... -
This is a unique flasher circuit employing a single driver transistor that takes its flash-rate from a flashing LED. The flasher within the ... -
A partial solution to quietening noisy PCs can be to reduce the speed of internal cooling fans. Low-cost fan speed controllers are avai...
