.. today’s world, both households and industrial facilities are exploring ways to improve power reliability by harnessing multiple energy sources, not just the electricity from the grid. One clever solution: ...
.. dashed line). The added circuitry comprises opto-coupler IC1, N-channel MOSFETs T1 T2, and a few passive components. When power is switched on, current flows through F1, L1, D1, IC1’s LED, C1, and the intrinsic diode of T1. ...
.. Idea (DI) contributors have recently explored various possibilities for ON/OFF power control using just a momentary contact “shiny modern push-button,” many of which build off of Nick ...
.. producing excessively high voltages. Q 3 , Q 4 , Q 5 , and associated circuitry allow for blocking the converter when the power supply to the circuit is too low. A too-low power-supply level may lead to an output-pulse amplitude from IC 2 ...
.. condenser microphones require a 48-V supply to charge the internal capacitive transducer and power the internal buffer for the high-impedance transducer output. You can use a simple boost converter, a filter ...
.. recently saw how certain audio power amplifiers can be used as oscillators ( Ref. 1 ). This Design Idea shows how those same parts can be used for ...
.. need current to illuminate, and current usually flows through a power supply to an LED. A typical LED-driver circuit uses a transistor to provide current and a series resistor to ...
.. seen lots of interesting conversations and Design Idea (DI) collaboration devising circuits for power switching using inexpensive (and cute!) momentary-contact SPST pushbuttons. A recent and interesting extension ...
.. a whole” is a very old and often true maxim. For example, it’s almost always true when said about AC phase angle power control. You rarely want significant alternating half-cycle asymmetry due to the (usually undesirable) DC load ...
.. I had a somewhat different triac control requirement calling for two manually operated pushbuttons, one for turning AC power on and the other for turning AC power off while preserving the zero-crossover feature. Another issue was that ...