Using this circuit, you can change the speed of the fan from your couch or bed. Infrared receiver module TSOP1738 is used to receive the infrared signal transmitted by remote control. The circuit is ...

XP® 8-pin Z8F04 microcontroller-based fan controller powered by a low-cost power supply that eliminates the need for transformer and regulator circuitry. Figure 1 Schematic Hardware Circuit Details We ...

The power of the proposed LED is regulated by variable switched capacitance, which is modulated by the TRIAC turn-on timing. Moreover, dimming control is obtained, in the same way of conventional ...

Pre-regulators at the input of power supplies minimize losses. This version uses optical feedback from an LED and light-dependent resistor instead of the more common optically ...

The Alternistor QUADRAC series is claimed to be an ideal, lower-cost alternative to the option of buying discrete diacs to assemble in conjunction with gated triacs. The device comprises a triac ...

If the application doesn’t demand a wide control range and low hysteresis, a simple variable light control may be designed using quadrac devices, such as the Littelfuse Q6008LTH1LED or Q6012LTH1LED ...