Switch Mode Power Supplies (SMPS) is now widely used in modern electronic equipment due to its compact design and high efficiency of about 80% or more. The switch-mode regulator circuit presented here has an efficiency of around 85%.
Tags: 5V switch mode power supply, 85% efficiency SMPS, MAX638CPA, simple switch mode power supply, Switch Mode Voltage Regulator, switch-mode regulator circuit
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 and also act to suppress feedthrough of input transients to the output supply. R2 and R3 determine the output voltage as follows :
Tags: ICL8211 circuit, Positive regulator, Programmable Voltage Detectors, regulator amplifier
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 and 37 VDC, and will supply the output current in excess of 1.5 A.
Tags: lm117, Regulator circuit, Variable voltage regulator, Voltage regulator
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 region of 8 ma.
Tags: Variable zener diode, Variable zener diode circuit, zener diode
These Low Voltage regulators with short circuit protection can provide 6, 7.5, and 9 V from an automobile battery supply of 13.5 V nominal, however, they will function just as well if connected to a smoothed dc output from a transformer/rectifier circuit.
Tags: AD161 transistor, AD162 transistor, Low Voltage regulators, short circuit protected regulators, short circuit protection
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