- Joined Sep 3, 2015
thank you for good explanation ... but resistor are common for all transistor because there emitters shorted together ..which model of mosfet is good for inverter ?1- It won't work well because there're no emitter resistors to balance the current among the transistors.
MOSFETs would balance the current automatically.
Also MOSFETs generally have better efficiency since they don't require base current to turn ON.
2- The diode-capacitor circuit won't do anything since there is no way to discharge the capacitor, once it's charged through the diode.
3- The resistors are selected so that the BJT base current is about 1/10th of the collector current.
Shorting the emitters together will lead to an imbalance in currents since BJTs have a negative coefficient of on-resistance versus temperature. MOSFETs have a positive coefficient so will automatically balance.thank you for good explanation ... but resistor are common for all transistor because there emitters shorted together ..which model of mosfet is good for inverter ?
the BJT base current is about 1/10th or 1/100 of the collector current? and u mean to get saturate and act like switch ?
|Thread starter||Similar threads||Forum||Replies||Date|
|Using Motor driver ICs for making sine wave inverter||Analog & Mixed-Signal Design||4|
|Mosfet Gate driver Circuit for inverter||General Electronics Chat||26|
|M||Tesla coil primary driver using the ordinary inverter.||General Electronics Chat||4|
|G||Suggestions for 3 phase IGBT inverter driver||Power Electronics||3|
|B||How to use HIP 4080 as a driver for full bridge inverter||Power Electronics||1|
by Luke James
by Wes Brodsky