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    Help with cascaded multilevel inverter

    * Question: Did you already have success making a simpler converter? 3 level? Square wave? These are the steps toward building a 5 level converter. * When you put an N transistor at the positive supply rail, it needs to be biased at a higher voltage than the positive supply. When the transistor...
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    Help with cascaded multilevel inverter

    Your circuit appears to be a cousin of the 5-level diode-clamped inverter. This is my simulation for comparison. Gating signals are generated via window comparators, analog fashion. Eight switches are used for simplicity. Typical waveforms are shown. The diodes come into use especially with an...
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    Dividing down the mains efficiently

    Coupled inductor reduces AC voltage while increasing AC current. This concept might be practical if there were an easy method to vary the inductor value (possibly with a movable slug). Or as an alternative, switch in various LC combinations. It's not the same as an autotransformer. Its Henry...
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    Offline flyback transformer winding...Options for auxiliary coil for best coupling?

    Can't say I have an answer about winding configurations, but I think power transfer is maximized by any method that gets wires close to the core.
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    Overvoltage Protection Circuit Clamping Voltage 10V , Withstand Voltage 500V

    It could be practical to turn off the supply entirely when it rises above a certain voltage. A transistor or two can do this. As supply gets above 10V, start the limiting function via resistive drop. Limit it to 10V. When it rises to a point where resistive drop generates too much heat or...
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    PushPull DC/DC Converter Desing

    Ampacity tables: amasci.com/tesla/wire1.html www.powerstream.com/Wire_Size.htm
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    PushPull DC/DC Converter Desing

    Here's a boost converter. Simple, low cost, low power. A basic construct to build from. It may not be the exact topology you finally build your project with, nevertheless it demonstrates principles of DC-to-DC SMPS operation. The bright white led's each need about 3.5 V in order to light. The...
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    Engineer a solution to this dam problem.

    Perhaps an add-on in the form of a momentary push-button? Soldered any place you want to trigger an alert? Example, sensor leads. Press the switch to mimic failure of the sensor. As you know it's a good idea to have backup components, such as two duplicate sensors. If you can arrange to test...
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    +/-20V, few hundreds mA split rail?

    Example of twin voltage doublers creating split supply, +20-20V. The supply is 12VAC peak. (The 5 ohm resistor is unnecessary.) If your supply is DC then you can place this entire layout across a full H-bridge gated to apply 12VAC.
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    Steady State Analysis

    Voltage multipliers (most of them) make use of one or more charge pump capacitors. The cap charges in one direction through a diode during one half of the cycle, then discharges through a different diode during the other half of the cycle. Your circuit has more than one stage. With light load...
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    Ceramic capacitor is blowing at random time

    Picture a little 1uF capacitor, its thin plates must endure 15 Amperes of current rushing across them in one direction, then the other, thousands of times per second. It may be necessary to split the burden across several capacitors in parallel. Say ten 100 nF.
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    Single Output Positive & Negative DC-DC Converter

    From the sound of it you wish to send current in either direction through a single load. Is that correct? A full H-bridge is able to do the job. Dial the potentiometer to change amplitude and direction of current to load. Notice the leftmost half-bridge has NPN at top. The rightmost half-bridge...
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    [SOLVED] Measuring Power input of DC Motor Control Circuit using PWM

    My analog VOM is useful for measuring pulsed DC current. The needle automatically averages Hi & Lo readings while factoring in duty cycle.
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    Mains voltage range in India?

    Quote from a Forbes magazine article: Ensuring that the electricity being provided is of a high quality remains a critical challenge for the expansion of Indian infrastructure, without blackouts, brown-outs or other disruptions of service. India suffers from rampant electricity theft and...
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    Mains voltage range in India?

    India suffers long-term brownout conditions. Several threads here have asked about methods of grid voltage stabilization (usually in India). One reported 50 percent voltage sag. It was a couple years ago just before news reported a grid blackout across half of India.
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    Need simple Buckboost current source controller IC for 2A ...nothing exists?

    For contrast and comparison with commercial IC... Basic buck-boost controlled by op amp via hysteresis. Current is sensed as voltage on a low-ohm resistor (or else a few inches of wire). 18v supply. 30v battery (positive terminal is ground referenced). Average charge rate about 2 A. (I made a...
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    Autotransformer highest voltage

    Simulation showing where to hook up load. Voltage is doubled, current is halved. Current in primary equals current in secondary. The 0.4 ohm resistor is unnecessary. It's placed to show how you can measure total Amperes drawn from the source, by reading AC voltage across the resistor.
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    How to design a transformer for Full bridge Dc-Dc converter

    It looks as though you converted to your initial H-bridge plan. Caution because 50V is high voltage hazard for mosfet insulated gates. To turn on a high-side Nmos, you must apply bias at several volts greater than its source terminal during turn-On. In other words greater than 50V. Consider...
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    How to design a transformer for Full bridge Dc-Dc converter

    Primary and secondary each appear to carry current during opposite halves of the cycle. Those waveforms appear correct. I guess the red waveform is correct since the ringing glitch is at the moment of switch-Off, which is normal behavior for inductors. To step down 50v to 35v, raw math tells...
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    To generate full wave dual output pulse from two wires

    Simple and straightforward. Two diodes create positive and negative bipolar supplies, . The loads can be different. (The 1 ohm resistor is unnecessary.)

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