DC motor full load current and no load – I have a DC motor with 24V and 11A written on its face plate but in the datasheet its nominal current is 4A. When I applied a 24V on its terminal at no load it draws 0.5A. I want to know what is the wrong data (face […]
edaboard.com
Top power electronics threads on EDABoard.com – February
Sine wave inverter voltage clipping – I’m in the process of building a sine wave inverter (MOSFET full-bridge and a low frequency transformer). I can’t manage to tune up the output filter (a series inductor in the transformer primary circuit and a capacitor across the secondary transformer). I have tried different inductor cores (E shape […]
Top power electronics threads on EDAboard.com – January
Flyback design problems – I am developing an open loop flyback converter. The image below is the result observed at 70v (Dc) Input. The waveform is of the voltage across drain to the source. I have used the diode-zener snubber but there is still some ringing. Read more Why is the damping resistor in our Bootstrap high […]
Top power electronics threads on EDAboard.com – December
High voltage input cascaded input converter – We have to do a non-isolated SMPS for vin=120v to 400v, and vout = 100v, pout=300w. There is a “known” way to do this involving two cascaded synchronous buck stages. Do you know more detail of this “known” method? Read more Designing a charge controller for hybrid system – I […]
Top power electronics threads on EDAboard.com – November
3V – 5V high current 150A power supply – I have been asked to generate a 100A RMS precise sinusoidal current. It will have negligible burden/load. Luckily I’ve done something very similar in the past where I used a LEM sensor, a dsPIC33, and an inductive load and a current-controlled PWM inverter based on a PI […]
Top power electronics threads on EDAboard.com – October
Industrial grade robust inverter build – I have done a lot of research online about IGBTs, gate drivers, blown up many IR2110s, studied PCB layout considerations, OC/SC protection, current sensors and so on but none of my designs has ever lasted for long when loaded by an actual motor. The waveforms were perfect, but smoke was […]
Top power electronics threads on EDAboard.com – August
Phase shift full-bridge SMPS is massively over-hyped? – The Phase Shift Full Bridge (PSFB) converter is a hoax. The LTspice simulation (Editor’s note: see post for file) of a “plain” full-bridge SMPS bears this out. PSFB claims to be able to reduce switching losses compared to the “plain” full-bridge SMPS. However, the PSFB does have turn-OFF switching losses, just […]
