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. Understanding amplifier power ratings. RMS power. DIN power. PMPO (Peak Music Power). Speaker power ratings. Methods for making 4 ohm speaker to appear as 8 ohm. Dampling factor. What is amplifier "bridging" or "monoblocking"?
    Circuits Audio Measurement
    .. are different methods for measuring the power ratings for amplifiers and speakers. And different measuring methids give different values so it is vital to ...
    .. of nominal value both at input and output. The continous power is measured when the amp is supplied by its normal power supply. It must then be able to deliver the rated power at 1 kHz for at least 10 minutes while the maximum THD does ...
    Sep 4, 2005
58. Minimize Input-Supply Ripple Current In LED Driver Applications
    Circuits Supply Light Intersil EL7801
    .. voltage was multiplied by two and the LED voltage was post-regulated by an internal low-dropout regulator. But some high-power LEDs require much higher current before they start emitting light. Therefore, most of today's ...
    .. the duty cycle. This simple approach works very well for dimming the LEDs, but it injects high ripple current on the input supply. In some systems, this becomes unacceptable because it drags down the input supply voltage. The peak-to-peak ...
    Jul 4, 2020
59. Enablement of Batteryless Applications with Wireless Power
    Circuits Supply Analog Devices LTC3588-1 LTC4123 LTC4124 LTC4126 LTC6992-1
    .. Vitunic, Analog Devices Analog Dialogue Question: My application doesn’t have a battery. Is it possible to power it wirelessly? Answer: Yes, sure a simple integrated nanopower solution originally designed for energy ...
    .. in the vicinity of it, then it can be wirelessly powered on demand. Enter the LTC3588-1 nanopower energy harvesting power supply. Although originally designed for energy harvesting (EH) applications powered from a transducer (for example, ...
    Jul 11, 2020
60. Short DC Power-Line Pulses Afford Remote Control
    Tom Hornak
    Circuits Supply Light Texas Instruments CD74HC14
    .. controlled light source to an existing ceiling lamp controlled by a wall switch, you may find that stringing a second power line is impossible. First, you can replace the wall switch by the circuit in Figure 1. Pushing the on switch S ...
    .. resistor R 1 creates a 60-Hz square wave across the 6 V zener diode, D 3 . Diode D 1 and filter capacitor C 2 generate a dc supply voltage of V DD = 5 V for the control circuit's active elements. Two two-stage RC filters connected to W ...
    Nov 3, 2022

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