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Low voltage detector – Circuit Schematic
Low voltage detector
The values of Rl, R2, and D1 are selected for the voltage applied. Using a 12-volt battery, Rl = 10 K, R2 = 5 K and D1 is a 5-volt zener diode, or a string of f...
Zener diode increase regulator output – Circuit Schematic
Zener diode increase regulator output
A zener diode in the ground lead of a fixed pnp regulator varies the voltage output of that device without a significant sacrifice in regulation....
90Vrms voltage regulator – Circuit Schematic
90Vrms voltage regulator
The circuit is an open loop rms voltage regulator that will provide 500 watts of power at 90 V rms with good regulation for an input voltage range of 110-130 V ...
HV regulator with foldback current limiting – Circuit Schematic
HV regulator with foldback current limiting
A TMOS MTM7N45 (Q2) is used as a series pass element in a linear high voltage supply that accepts +275-V unregulated and produces 250 V regulated with foldback ...
Basic single-supply voltage regulator – Circuit Schematic
Basic single-supply voltage regulator
The circuit uses a CA3140 BiMOS op amp capable of supplying a regulated output that can be adjusted from essentially 0 to 24 volts. ...
linear regulator – Circuit Schematic
linear regulator
Intended for extreme temperature, radiation-hardened environments, this linear supply is capable of supplying 28 Vdc at 125 A from an ac-driven power unit. In o...
Voltage regulator for projection lamp – Circuit Schematic
Voltage regulator for projection lamp
The circuit will regulate the rms output voltage across the load (a projection lamp) to 100 volts ±2% for an input voltage between 105 and 250 volts ac. This...
Low Power Voltage Reference – Circuit Schematic
Low Power Voltage Reference
The voltage reference circuit described below, is a special implementation of current source LM334. Characterized by a very small temperature coefficient metath...
Low Power consumption 5V regulator circuit – Circuit Schematic
Low Power consumption 5V regulator circuit
The special feature of the circuit shown below is the low consumption. With voltage n 9 at the entrance and no exit load, absorbs current 50 ma, which is certai...
Switching Regulator with L4972A
The LA9472A is a 2A monolithic step down switching regulator operating in continuous mode and realized in a new BCD technology allowing the integration of isola...
Basic power supply schematic – Circuit Schematic
Basic power supply schematic
The simplest power supply voltage regulator can be created with the 78xx series. The voltage regulator is available in different voltages (see table). The contr...
Regulation with transistors – Circuit Schematic
Regulation with transistors
This page discusses the various ways that a voltage regulator can be made using two transistors. If one of these transistors is the series-pass element, then th...
Solar voltage regulator – Circuit Schematic
Solar voltage regulator
The circuit presented here uses linear shunt regulation. Simply spoken, it burns off all excess energy from the panel, keeping output voltage constant. At times...
Linear MOSFET voltage regulator – Circuit Schematic
Linear MOSFET voltage regulator
The circuit is a MOSFET based linear voltage regulator with a voltage drop of as low as 60 mV at 1 ampere. Drop of a fewer millivolts is possible with better MO...
Regulator L200 schematics – Circuit Schematic
Regulator L200 schematics
Here they exist two regulator circuits, that use the IC L200, as regulator of voltage and current, the company SGS-Thomson, which give these circuits. In circu...
5V regulated power supply – Circuit Schematic
5V regulated power supply
his circuit is just an implementation of the 7805 integrated voltage regulator. What this little component does is to lower a voltage and stabilize it by reduci...
Voltage Regulator – Circuit Schematic
Voltage Regulator
This regulator is suitable for devices that need up to 1mA. For higher output current, the resistors would have to be scaled down in reverse proportion to the p...
12V to 3V Car adapter – Circuit Schematic
12V to 3V Car adapter
This 3 volts Car Adapter circuit is based on a standard LT1074CT switching regulator IC. The schematic shows the LT1074CT used as a positive step-down or ‘buc...
Shortcircuit protected voltage regulator – Circuit Schematic
Shortcircuit protected voltage regulator
At this voltage regulator prototype the maximum current, with output shortcircuited it was only 0,5 A, so no overheating occured. In this dc voltage regulator ...
Voltage Reference LED indicator – Circuit Schematic
Voltage Reference LED indicator
A keyed power input connector, series rectifier and a shunt rectifier, both 1N4007, prevent reverse voltage from being applied to the power input. A 27 volt met...