Free Circuit Diagram

The configuration in the circuit diagram below can be used when a slow rise time of the output voltage is required. We can find the rise time with following formula:
ton= CVoR
0.45

Capacitor C is discharged when the switch position is ON and this will maintain the voltage at pin 2 low. The Vo follows the voltage [...]

It’s good to reduce the power dissipated by the device. Using resistor connected in series to the input (the left figure) is a simple and economic method to reduce the device input-output differential voltage. Here’s the formula for calculating R:
R= [Vi min- (Vo+Vdrop)]/Io
Vdrop = minimum differential voltage between the input and the output of the [...]

This is a programmable voltage regulator circuit. With this circuit we can generate a voltage according to our wishes. This circuit uses L200 IC. Here is the circuit :

Potentiometer R2 is used to fix the output voltage Vo. Following equation show value of the output voltage:
Vo=Vref (1+(R2/R1))
We can obtain a wide range of fixed output [...]

If you are a hobbyist or a professional electronic engineer who make many electronic e]experiment, troubleshooting, or testing, providing wide range variable voltage power supply in your lab or workshop will make your life easier. You can build your variable power supply using linear adjustable regulator, but switching technology let you design a very wide [...]

A DC-to-DC step-up converter is traditionally implemented using transformer, working by converting the DC voltage to AC Voltage, step-up it using transformer, then rectify and filter the transformer’s output to  get a higher DC voltage. Using a switching method, we can step-up a voltage without a transformer. We just need an inductor which is driven [...]

Using this switch mode regulator circuit, you can get a stable 12 volt output (500mA) although you just have 4,3 – 10V power supply. You can even boost a 3.5V input to 12V if the load draws only 100 mA or less. This switch mode voltage regulator use LTC1266 IC chip from Linear Technology. Here [...]