PakProtector
Veteran Member
Of all the silly things, you can buy used Hella on Aliexpress. For what they are selling for I have not much doubt as to their authenticity. They are distressed, and complete with distressed German labels...on top of reasonable likelihood of access to scrappers who'd salvage such things.
On the boosting, I'd be tempted to go MOSFET and rectifier diode hunting with an engineer skilled in the art. That way some of the heat generation( and drive requirement loading issues) can be headed off at the source. Just an example, a MOSFET is going to offer no heat gen benefit if the R_ds-ON resistance benefit is overshadowed by so much gate capacitance that it lives longer in the linear region. The usual improvement to such things is less gate capacitance to go along with less resistance in the ON state. Just have to pick the right one. Switching faster is always a benefit...
I don't quite have the skills to swap the diodes for an active MOSFET bridge, but that would help too. Less heat means longer life. Recall that these things are rated for 2k hours of life; any temperature benefit that can be realized will be all to the good there.
cheers,
Douglas
On the boosting, I'd be tempted to go MOSFET and rectifier diode hunting with an engineer skilled in the art. That way some of the heat generation( and drive requirement loading issues) can be headed off at the source. Just an example, a MOSFET is going to offer no heat gen benefit if the R_ds-ON resistance benefit is overshadowed by so much gate capacitance that it lives longer in the linear region. The usual improvement to such things is less gate capacitance to go along with less resistance in the ON state. Just have to pick the right one. Switching faster is always a benefit...
I don't quite have the skills to swap the diodes for an active MOSFET bridge, but that would help too. Less heat means longer life. Recall that these things are rated for 2k hours of life; any temperature benefit that can be realized will be all to the good there.
cheers,
Douglas