Circuits & Schematics: power supply - 10

91. Active Rectifier Controller with Ultrafast Transient Response and Low Power Dissipation
    Circuits Supply Analog Devices LT8650S LT8672
    .. is an active rectifier controller that (along with a MOSFET) provides reverse current protection and rectification for power supplies in automotive environments. This job is traditionally taken on by a Schottky diode, over which the ...
    .. power dissipation Small, predictable, regulated 20 mV voltage drop The LT8672 also includes a number of features to satisfy supply rail requirements in automotive environments: Reverse input protection to 40 V Wide input operation range: 3 ...
    Jun 14, 2018

92. 0.05 µV/°C chopped amplifier requires only 5 µA supply current
    Jim Williams
    Circuits Amplifiers Analog Devices LT1495 LTC1440
    .. operation and A1’s bandwidth dictate the 5 Hz clock rate. As such, the resultant overall bandwidth is low. Full-power bandwidth is 0.05 Hz with a slew rate of about 1 V/s. Clock-related noise, about 5 µV, can be reduced by ...
    .. 1 shows a chopped amplifier that requires only 5.5 µA supply current. Offset Voltage is 5 µV, with 0.05 µV/ C drift. A gain exceeding 10 8 affords high ...
    Dec 15, 2023
93. TOP242 power source for 10W LEDs
    Circuits Analogue Design Supply Light
    .. 500mA transformer Here are the electrical schematic: Click for inlarge Electronic schematic with the current limited TOP242 power source included And the printed circuit board schematic: Redesigned vinyl sticker PCB schematic for current ...
    .. two comparators with open collector which means it requires a polarization resistance towards the positive terminal supply (R9). If any of the outputs 1 or 7 of LM393 has the ground voltage then the voltage from the power ...
    Dec 19, 2012
94. Crystal-oscillator circuit is ultralow power
    Circuits Oscillators
    .. with about 10 pF of shunt capacitance; operating current into more capacitive loads will be higher. Table 1 breaks down the power consumption piece by piece. Capacitive loads must be charged by the upper transistor in the active output stage ...
    .. current for this comparator is 580 nA; the entire circuit shown in Figure 1 draws only 5 µA when running from a 3.3V supply. Figure 1. Traditional gate-oscillator circuits can draw several milliamps; the circuit shown normally draws ...
    Apr 11, 2013
95. Simple Circuit Communicates Over Low-Voltage Power Lines
    Julia Truchsess
    Circuits
    .. The data is OOK (on-off keying) modulated and superimposed on a high-frequency carrier so it can be sent over a low-voltage power supply line. Sometimes a circuit requires a data link over an existing cable that doesn’t have any free ...
    Nov 21, 2013
96. LM555 Makes Inexpensive Power Driver
    Rick Mally
    Circuits Power LM555
    .. digital circuits require push-pull power drivers, particularly for gate and line driver applications. Many special-purpose devices are available for ...
    .. versions) can serve as a very inexpensive and capable driver. With its powerful totem-pole output and a 4.5- to 16-V supply range, the LM555 can be used as either a buffer or an inverter. If more than one driver is required, ...
    Jul 25, 2013
97. MSP430 Powerscope - A Low Power Aid
    Circuits Measurement Microcontrollers Usage
    .. Power Scope is a meter intended for use on a breadboard to aid in the development of battery-operated devices. It ...
    .. resolution (Low Range ) Reverse voltage protected Maximum Burden Voltage = 0.3v Meter itself consumes 8.5mA from a 5.4v supply Power source can be +3.5v to +10.0vdc Inputs are Overvoltage protected up to +/- 40.0vdc Sample update rate = ...
    Aug 13, 2013
98. Low-duty-cycle LED flasher keeps power draw at 4 mW
    Marián Štofka
    Circuits Light Power
    .. equipment often will benefit from a power-on indicator. The indicator, however, can waste significant power. In situations where a low-duty-cycle ...
    .. duration, T L , of the generator is expressed as where V HYST is the hysteresis voltage at the input of IC 1 , V CC is the supply voltage of IC 1 . For V CC =4.5V, the typical value for V HYST is 0.75V. For the required value of T L =0.5 ...
    Aug 21, 2013
99. Hex Buffer, MOSFETs Build A High-Power, Lossless, Virtual Ground
    Louis Vlemincq
    Circuits Power CD4069
    .. created this way sees high imbalance currents, though, things become more complicated. The buffer not only needs to be a power buffer, it will also have to dissipate the result of any imbalance. This is wasteful, and it may even require ...
    .. virtual ground is useful whenever you need to create a bipolar supply but the dc source is unipolar, as is often the case with battery-operated equipment. Sometimes, the solution ...
    Dec 10, 2013
100. Small, simple, high-voltage supply features single IC
     Alfredo Saab
     Circuits High Voltage Power Maxim MAX1605
     .. electrostatic traps, and other applications require regulated, high-voltage power supplies that deliver modest amounts of output current. Simplicity, low quiescent current, and compactness are ...
     .. which dissipate much less power. Figure 1. Obtaining feedback from a low-voltage secondary winding, this high-voltage supply generates 500 V with low quiescent current. The MAX1605 IC from Maxim contains the necessary switching ...
     Nov 16, 2015

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