Yes ghurd i get your drift,i personaly couldnt put together
anything electronic together,
(apart from the philips kits we used to get as kids,made a radio once)
I think maybe there was crossed lines in my post, i saw on another site
that blocking diodes can be used as a one way valve so to speak to prevent
the battery from driving a pma or dynamo turbine, i think they are normally
refered to as stud diodes, i had some of these from an old (probly fork truck)
charger,(no televisions invoved),and as well as the stud diodes there were 3 similar
ones that have small wires coming from them i now now that they are current flow control diodes thyristors,
im not intnding to build a complex controller just a free (heavy duty)reverse
current preventer i dont think the thyristors are much use to me
rgrds nodge