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Power Supply

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Paralleling LM317 regulators for higher current, using TL431 reference for excellent performance
5.00 star(s) 2 ratings
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TL431 provides accurate, adjustable voltage crowbar function for circuit overvoltage protection
5.00 star(s) 3 ratings
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Simple, efficient, lead-acid battery charger auto switches from CC to CV mode
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Minimal circuit for auto CC/CV charging. Option allows pot adjustment of charge current.
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Two simple high-side sense current limit circuits adjust to zero current and have low voltage drop
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Inexpensive, single regulator IC power supply with I and V adj. to zero, includes I & T monitors
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Good for low-drop diode applications, such as blocking battery back-charging or brownout protection
4.50 star(s) 2 ratings
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Lead-acid battery charger starts with constant-current and ends with constant-voltage trickle charge
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Single +output plus dual +/- tracking output supply using common 3-terminal regulators goes to 0V.
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MOSFET bridge for efficient resistive load rectification, or indifference to input power polarity.
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PWM allows easy control of linear regulator output voltage for μP based power supplies
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Constant-current hysteretic buck regulator supply for high power LEDs, efficiency of 90%
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MOSFET Bridge Rectifier gives high efficiency for low voltage, high current AC-DC supplies
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Linear power supply core theory plus circuits that can be adapted to suit your application
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Simple micropowr circuit to protect batteries from under voltage
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A simple circuit to get down to zero volts with a standard three terminal regulator
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Two voltages, one twice the other, require only a center-tapped transformer and bridge rectifier
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Electronic Fuses eliminate fuse replacement and current-limit short-circuit power dissipation
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Circuit to turn a secondary device on automatically when the main device operates.
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