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This is example of a simple inverter that can be used to power fluorescent lamp and a small strobe. This circuit will produce over 400VDC from a 12 VDC, 2.5 A power supply or marine battery or an auto. This circuit is very simple because it does not require custom transformers or coils. Also all …
Read MoreTEC is one of the cooler that was popular because of its robustness and maintenance free characteristic. This article shows one example of the TEC driver. To operate this circuit operates we need a single +5V supply and drives the TEC in the most preferred “constant-current” mode. It will deliver ±2A into a TEC. Picture …
Read MoreDimmer Switch Introduction Dimmer switch can be used to replace your electrical switch for lamps, heaters, or some types of electric motor. Dimmer switches will control the electricity not only for on-off operation, but they are capable of operating somewhere between “on” and “off”. Dimmer switch actually works by switching the electricity on-off …
Read MoreThis temperature controller employs an LM135/235/335 temperature sensor, can be used to keep small environment warm or hot. Here is the schematic diagram: LM311 is used as comparator, to detect if the voltage at sensor pin (the inverting input) goes higher than the reference pin (the non-inverting pin). If this condition is …
Read MoreWhat is A pH Meter? A pH meter is actually a precise voltmeter that measures the generated voltage of a pH electrodes. The requirement of such meter is high input impedance and has the gain of voltage-pH conversion. The standard pH probe generate voltage about 59 mV per pH, so all we …
Read MoreSwitching Regulator for High Power Efficiency When you should regulate a high voltage to a much lower voltage, switching regulator must be the only choice. Fortunately, a simple switcher integrated circuit chip is available, let you build a complete step-down switching regulator using five components. The switching regulator IC used in …
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