5V FET Voltage Regulator and How It Works

Using a FET and two additional transistors (cascaded to improve the gain), a 5V FET voltage regulator can be formed. The additional Tr2 and Tr3 transistors will improve the output current handling and decrease the output impedance. The output voltage deviate only 0.1V for load current change as high as 60 mA which is caused by load resistance changes that […]

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50V Precision Regulator using LM10 IC

This voltage regulator arrangement is unique, since the op-amp is configured not to see either the source voltage or the output voltage directly, making it possible to regulate higher voltage while the IC is only suffering the transistors bias voltage. Here is the schematic diagram of the circuit: You can see in the diagram that the IC’s power supply pin […]

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LM10 Negative Regulator

It is possible to build a negative regulator using LM10 comparator and voltage reference IC. A transistor is employed to shift the reference current, increasing the minimum operating voltage to approximately 1.8V. The transistor should has high gain for better thermal stability, for example, gain = 100 will cause 1% drift over -55 to 125 °C temperature range. The gain […]

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LM10 Shunt Regulator

Shunt regulator is equivalent with zener diode regulator, where you can connect the circuit in series with a resistor and tap the output at the junction. With LM10, we can build more stable regulator (compared to zener diode version). Here is the schematic diagram of the circuit: The nominal voltage of the circuit is the internal voltage reference multiplied by […]

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