Saturday, March 7, 2020
THE VOLTAGE DOUBLER
Doubling the DC voltage from a single wind secondary can be done. Say the secondary is 6 volts. To get 6 volts, a single diode wherein we only use half wave. To capture both , we need to use a bridge of 4 diodes. The difference is that we got twice the current with the bridge. The DC output will b the same at 6 volts.
We can double the DC output by charging two similar capacitors in series, each being "charged" by a half cycle. The caps then are not charging at the same time but alternatively. But the charge is there and being in series, will add up to 12 volts!
One end of the seconday line is connected to the junction of the two caps. The other end has two diodes to it with one putting out a +, and the other , a -. The plus goes to the pus of ghe upper cap., the minus to the lower cap.
Will tr
y to upload a diagram.
Subscribe to:
Post Comments (Atom)
The diodes can be tubes. For my tube radio, I found a traffo with a 6.3 V and 18-0-18 volts secondary. The 6.3 V is for the heater. i will use the circuit above to raise 72 volts! If not enough, series another traffo with the 36 v line, a 24 v one. That will make it 60 volts x 2= 120 v DC. The smalle traffo in series will determine the current available.
ReplyDelete