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Servo loop improves linear-regulator efficiency – Circuit Schematic
Servo loop improves linear-regulator efficiency
Linear regulators are easy to implement and have better noise and drift characteristics than switching approaches. Their largest disadvantage is inefficiency: e...
Simple Pre-Regulator – Circuit Schematic
Simple Pre-Regulator
There will be many times where it is desirable to use the P05 supply module from a higher voltage source. For example, if you want to add balanced inputs to a p...
Voltage Doubler Circuit – Circuit Schematic
Voltage Doubler Circuit
If you want to try a higher voltage with your pedals, try this simple and easy voltage doubler circuit which uses an ICL7660 CMOS Voltage Converter Chip I have ...
Increasing Regulator Current – Circuit Schematic
Increasing Regulator Current
Although the 78xx series of voltage regulators are available with different current outputs, you can boost the available current output with this circuit. A po...
Variable Voltage Regulation – Circuit Schematic
Variable Voltage Regulation
As Ron suggests, controlling the output voltage from a regulator can be made variable in three ways. Using a fixed reference zener diode to increase the output ...
LM317 Regulator Circuit – Circuit Schematic
LM317 Regulator Circuit
I constructed this voltage regulator to power my two way mobile radio from the car cigarette lighter circuit. It has many other uses and the voltage can easily ...
Overvoltage Protection for the LM317 – Circuit Schematic
Overvoltage Protection for the LM317
It is a voltage regulator that allows a 6v portable supply to be derived from the 12v car battery. You can add a 6.2V zener diode and a LED to warn you when the...
Variable DC Power Supply – Circuit Schematic
Variable DC Power Supply
This power supply is based on the LM317 Variable Regulator. The input of the regulator needs to be around 28 Volts DC and it will output a DC voltage from 1.25v...
LM317 variable power supply – Circuit Schematic
LM317 variable power supply
A truly timeless circuit. LM317 is a versatile and highly efficient 1.2-37V voltage regulator that can provide up to 1.5A of current with a large heat sink. It`...
Regulated 12 Volt Supply – Circuit Schematic
Regulated 12 Volt Supply
This circuit above uses a 13 volt zener diode, D2 which provides the voltage regulation. Aprroximately 0.7 Volts are dropped across the transistors b-e junction...
Portable CD Player Adapter For Car – Circuit Schematic
Portable CD Player Adapter For Car
Whenever I`m in the car listening to my favourite CD, it always happens-my batteries go dead. To solve that problem, I built this extremely simple regulator cir...