A BJT, MOSFET, JFET, etc. is a device.Can anyone explain to me what is the significance of a chopper transistor as opposed to a normal BJT? I read online that its used for square wave pulse generation, but I don't really understand what the mechanism is.
Ok, so what distinguishes it as a transistor to be used for chopping applications? As in, why are there parts sold specifically labeled as chopper transistors? What spec or mechanism makes it characterized for this application? Or else you should be able to use any general purpose transistor that meets your applications requirements. But these are specifically sold as chopper transistors.A BJT, MOSFET, JFET, etc. is a device.
A chopper transistor is an application of the above. If it's the chopper transistor I'm thinking of, it just means a transistor used to generate a square wave from a DC supply. The mechanism for doing this is some kind of back-end circuitry (there's lots of ways of doing this, with a 555 timer, for instance) which controls the transistor, turning it on and off as necessary to generate the square wave.
Its being used as part of a switch to power an active antenna. So basically this chopper will turn on and off the DC voltage path to the antenna dependent on a few conditions (open antenna or short antenna fault detection, enable/disable antenna).Um, are you saying that you want to drive an antenna with a square wave? Why?