Sorry no pics guys, but I was talking to a fellow Ham Operator today and he mentioned that when Auto radios first came about, you had to have a device called a vibrator to transform the 12VDC to 250V(AC/DC?).
Please bear in mind these would have been Valve sets.
I know nothing about these devices, but they sound great from a voltage conversion stand point.
Can anyone shed any light on this topic?
Considering the actual transformation ratio, these could have been the first inverters?.
I'm really interested in the theory behind these devices.