Category: PSA Knowledge

Corsair HX Professional 0

Choosing a PC Power Supply by Power Comparison

Power supply is probably the most computer components are often overlooked by PCs buyers. However, this component is very important : such as when the power is insufficient or if the voltage is too...

Positive regulator with pnp boost 0

Positive Regulator with PNP Boost

The IC8211 (Programmable Voltage Detectors) provides the voltage reference and regulator amplifier, while Q1 is the series pass transistor. R1 defines the output current of the IC8211, while Cl and C2 provide loop stability...

Variable voltage regulator base LM117 0

Variable Voltage Regulator based LM117

The regulator circuit uses an LM117K three-terminal adjustable output positive voltage regulator in a TO-3 can. The variable voltage regulator lets you adjust the output voltage of a fixed DC power supply between 1.2...

Variable zener diode 0

Variable Zener Diode

This circuit acts like a zener diode with a wide range of voltages. The current passing via the voltage divider R1-R2 is substantially greater compared to the transistor base current and is in the...

linier power supply 0

Linear Power Supply

Every electronic circuit will work as good as its power supply. However this is often overlooked. There are two main families of power supplies: the linear power supply and switch mode power supplies.  Linear...