Circuits & Schematics: power supply - 6

51. Adjustable 0 V to 5 V power supply
    Kevin Vasconcelos
    Circuits Supply Analog Devices LT1006 LT1029 LT1076
    .. regulator ICs are commonly used in variable power supplies. Common types such as the 317 can be adjusted as low as 1.25 V in single-supply applications. At low ...
    Feb 27, 2023

52. Low power voltage-to-frequency converter makes a wireless probe for testing an inductive power supply
    Eliane Garnier Francis Rodes Salma Alozade
    Circuits Wireless Measurement Supply Texas Instruments LMC7211
    .. critical applications, and, in these circumstances, designers typically use wireless inductive links to transmit both power and data. An inductive link comprises an RF transmitter that drives a fixed primary coil, and a loosely coupled ...
    .. output current. Hence, I IN approximately equals I L . Equation 1 expresses the dc output power that the inductive power supply produces: (1) This equation shows that the output current is constant and therefore the dc output power, P X ...
    Aug 3, 2023
53. 3-leg regulator in shunt mode makes variable power supply symmetrical
    Stephen Woodward
    Circuits Supply Fairchild LM317
    .. inspire “new fangled” circuit designs. Figure 1 shows a useful example. Figure 1. Symmetrical-output variable power supply uses single DC source with classic 3-leg regulators, one regulator (U3) operates in shunt mode as ...
    Oct 30, 2023
54. Control a processor's power supply in real time
    Yogesh Sharma
    Circuits Supply Microcontrollers Usage Analog Devices AD5258 ADP3051
    .. battery-powered applications in which power management is key, a microprocessor may adjust its core voltage corresponding to an increase or a decrease in ...
    .. but not wasting excess power when idle. The circuit of Figure 1 shows how an embedded processor can control its own supply voltage via a simple step-down converter and inexpensive digital potentiometer. Figure 1. Under control of ...
    Jan 25, 2024
55. 85V-260VAC to 5VDC-2.5A flyback switching power supply
    Hesam Moshiri
    Circuits Supply Dongke Semiconductor DK1203
    .. key part of any electronic device is the power supply. Any instability or malfunction of the power supply part causes the device to stop working or ...
    May 7, 2024
56. Symmetrical 10 V, 1.5 A PWM-programmed power supply
    Stephen Woodward
    Circuits Supply Texas Instruments CD4053B
    .. regulated power supplies are handy tools found on well-equipped electronics lab benches. The symmetrical varieties that produce ...
    .. voltage outputs of opposite polarity, are even more so. Figure 1’s version of a symmetrical 0 V to 10 V, 1.5 A lab supply implements an extra handy trick: computer programming via a single PWM output. Figure 1. LM337 , LM317 , and ...
    Dec 26, 2024
57. Power supply accepts wide input-voltage range
    Jim Windgassen
    Circuits Supply Analog Devices LT3008 LTC1871
    .. switching power supply in Figure 1 produces 3.3 V dc from an input voltage of 2.5 to 20 V dc with high efficiency. The circuit ...
    Oct 22, 2025
58. Transformerless 85-260VAC to 12VDC-0.2A power supply
    Hesam Moshiri
    Circuits Supply Diodes AL17150
    .. the AL17150 high-voltage step-down controller chip. Figure 1. Schematic diagram transformerless 85-260 VAC to 12 VDC-0.2 A power supply. According to the datasheet of the AL17150: “The AL17150-10B is a universal high-voltage input ...
    .. you hear the transformerless supply term, you initially imagine the capacitor-based solution: a high-voltage non-polarized capacitor in series ...
    Feb 12, 2026
59. Dual-fan PWM cooling circuit with a 6W isolated flyback power supply
    Hesam Moshiri
    Circuits Supply Microcontrollers Usage Atmel ATtiny13
    .. project presents the design and implementation of a dual-fan PWM cooling circuit, integrating a compact and efficient power supply with intelligent fan speed regulation. The circuit consists of two main parts: a 6 W isolated flyback ...
    Jun 15, 2026
60. An off-line power supply
    Gavin Watkins
    Circuits Supply Texas Instruments LM317
    .. as it is only 50% efficient, and any dropped battery voltage will be dissipating as heat. However, assuming renewable power generation is used as the source, this would prove a more environmentally friendly solution compared to using ...
    .. around an LM317 linear voltage regulator in a nice black plastic enclosure sold by Maplin Electronics as a “power supply” box. The NiCd battery hadn’t been used for over 20 years, so this project would be a repurpose. ...
    Jul 29, 2026

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