Circuits & Schematics: supply - 6

51. Reset supervisor waits for stable supply
    Circuits Analogue Design Microcontrollers Usage Texas Instruments TLV3491
    .. Mitchell EDN The power-up cycle of the supply voltage in embedded-system applications is sometimes not a clean event. This fact holds especially true in ...
    Mar 29, 2017

52. Obtain a lower dc voltage from a higher voltage power supply
    Luca Bruno
    Circuits Supply Infineon IRF9530
    You can use the circuit in Figure 1 to obtain a low regulated voltage, such as 5 V dc, from a higher voltage, rectified, sinusoidal voltage source without resorting to an electrically noisy dc/dc converter or wasting watts in a dropping resistor. ...
    Sep 12, 2017

53. Turn negative regulator «upside-down» to create bipolar supply from single source
    Stephen Woodward
    Circuits Analogue Design Beginners Supply Texas Instruments LM7905CT LM320-N
    .. the ever-growing choices among single-supply “Rail-to-Rail” op-amps, it will always remain true that the only way to design an output stage ...
    Oct 5, 2017
54. Simple Power Backup Supply for a 3.3V Rail
    Victor Khasiev
    Circuits Supply Linear Technology LTC3643
    .. Data loss is a concern in telecom, industrial and automotive applications where embedded systems require a dependable supply of power. Sudden power interruptions can corrupt data during read and write operations performed by hard ...
    Oct 31, 2017
55. "Unstable" Power Supply Simulates Solar Panel Behavior
    Giovanni Romeo Giuseppe Urbini
    Circuits Supply Solar Analog Devices ADM660
    .. power supply may seem a bit strange, since it’s not stable in voltage or in current. However, it simulates the ...
    Jul 23, 2018
56. Use a 555 timer as a switch-mode power supply
    Aaron Lager
    Circuits Supply Texas Instruments LM555 LM556 LF411
    .. IC can inexpensively perform PWM. The circuit in Figure 1 shows how to turn a 555 PWM circuit into an switch-mode power supply with only one simple equation. The design uses two 555s. IC 1 , in astable mode, triggers IC 2 in PWM mode. ...
    Mar 2, 2020
57. Program a PIC Processor In-Circuit Using a 3.3-V Supply
    Circuits Supply Microcontrollers Usage Infineon IRLML6402
    David Conrad Electronic Design In this Idea for Design, placing this circuit setup between the battery V DD bus and the PIC microcontroller allows you to execute in-circuit programming while protecting the application circuit. Many PIC processors ...
    Mar 6, 2019
58. Four-quadrant power supply provides any-polarity voltage and current
    Jon Munson
    Circuits Supply Analog Devices LT1970 LT1882
    .. conventional power supply operates only in the first quadrant; positive-voltage output and current are sourced to a load or, with a ...
    Mar 20, 2019
59. Retriggerable monostable multivibrator quickly discharges power-supply capacitor
    Jordan Dimitrov
    Circuits Supply ON Semiconductor CD4538BC
    .. to 120 to 370 V dc. Such voltages present a serious threat to personnel who are prototyping or repairing the power supply. It is desirable to discharge the filter capacitor when mains power is off so workers can safely deal with ...
    Mar 20, 2019
60. Supply converts 5V to -48V
    Circuits Supply Linear Technology LTC1624
    .. Mathews EDN As the demand for networking equipment grows, the need arises for a 48 V supply that can power telecommunication lines. The circuit in Figure 1 delivers 24 W at 48 V from a 5 V input. One ...
    Jun 10, 2019

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