I am attempting to design a circuit which reverses the direction of a high voltage 5ma dc through a 100k load.
The circuit currently achieves a high voltage by means of a flyback converter powered by a 12V(cells in a series). The output is fed through a full bridge rectifier to produce aprox. 500V DC, through a 100k load giving 5ma.
My goal is to cause the current on the load to be reversed at a given interval, let's say 100hz. In theory all I would need to do is switch the output leads from the rectifier to the opposite side of the load. This is proving problematic for me, being that this involves high voltages and I am having trouble determining which components I would need to accomplish this task. I would imagine it would involve transistors acting as an h-bridge or something of the sort, fed by a high voltage low current driver chip (does that sound right?).
It would be of great help if anybody could give some relevant advice.
-Thanks
The circuit currently achieves a high voltage by means of a flyback converter powered by a 12V(cells in a series). The output is fed through a full bridge rectifier to produce aprox. 500V DC, through a 100k load giving 5ma.
My goal is to cause the current on the load to be reversed at a given interval, let's say 100hz. In theory all I would need to do is switch the output leads from the rectifier to the opposite side of the load. This is proving problematic for me, being that this involves high voltages and I am having trouble determining which components I would need to accomplish this task. I would imagine it would involve transistors acting as an h-bridge or something of the sort, fed by a high voltage low current driver chip (does that sound right?).
It would be of great help if anybody could give some relevant advice.
-Thanks