Circuits & Schematics: power supply - 10

91. 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

92. 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

93. 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
94. 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
95. 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
96. High Performance Single Phase DC/DC Controller with Power System Management
    Circuits Supply Power LTC3883
    .. frequency and the output voltage Input current sensing and inductor DCR autocalibration 1.8 V/30 A Single Phase Digital Power Supply with I IN Sense Figure 1 shows a 7 V to 14 V input, 1.8 V/30 A output application that features inductor ...
    May 2, 2015
97. Power Zener using the LM317
    Circuits LM317
    .. useful circuit configuration that will allow it to source or sink a high current in either a positive or a negative voltage supply. Tying the Adjust terminal to the Output terminal forces the internal regulator to compensate, pushing the ...
    Jun 9, 2014
98. Additions Boost Fault-Protected Current Limiter Precision At Higher Supply Voltages
    Anthony Smith
    Circuits
    .. described a technique for protecting the “pass” transistor in a current-limiting circuit against excessive power dissipation (see “Fault-Protected Current Limiter Keeps Its Cool”). Although highly effective at ...
    .. previous current limiter works well at low supply voltages but lacks precision at supply voltages above 10 V. This improved version reacts quickly to protect ...
    Jul 2, 2014
99. ST's MOSFET technologies for uninterruptible power supplies (UPS)
    Circuits Supply Application Notes STMicroelectronics STP90N55F4 STP110N55F6
    .. Note AN4390 November 2013 The UPS (uninterruptible power supply) is gaining ever increasing importance in office and industrial environments, because it preserves the ...
    Dec 21, 2013
100. Series-connected MOSFETs increase voltage & power handling
     Circuits Supply Power IXTQ10P50P
     .. presents a simple, proven, reliable, and robust method for charging large capacitor banks, using a series connection of power MOSFETs to raise the breakdown voltage over that of an individual MOSFET. When a power supply drives a large ...
     Oct 22, 2015

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