I might as well ask an electrical question myself. What is the cheapest (or at least simplest) way to reduce the main tank's voltage X volts to power small, intricate IC's, etc on a circuit that require <X volts? Is there any way to reduce voltage like this without harming the circuit or messing up the battery? Is resistance the answer?
—Mike "not the electrician" Måne Message sent by way of mobile device On Aug 22, 2009, at 7:49 PM, Don Shankin <[email protected]> wrote: > Good call, just be careful around those caps > > On Sat, Aug 22, 2009 at 6:13 PM, Gregory Pwneror > <[email protected]> wrote: > If you need to find a MOSFET look inside an old computer power > supply, they usually have half a dozen of them inside. They also > have 1600uf capacitors :) > > -Gregory > > > On Sun, Aug 23, 2009 at 7:36 AM, Frank Pittelli <[email protected] > > wrote: > > Don Shankin wrote: > > Are you talking about MOSFETs? They're essentially voltage- > controlled > > transistors (as opposed to being current controlled). > > Yes, there is a new breed of MOSFETs called "self-protected MOSFETs" > that are specifically designed to be driven from logic levels and that > protect against all kinds of problems. For example, see: > > http://www.onsemi.com/PowerSolutions/parametrics.do?id=819 > > The last time I looked (about 6 months ago), they only produced them > in > tiny surface mount packages (which are too small for my eyes and > soldering skills :-) However, while googling to answer this > question, I > see that they are now producing them in good old TO-220 packages, so > I'll have to see if my normal electronics suppliers stock them as > well. > > The nice thing about this new breed is that (a) they are designed for > logic level inputs, (b) they protect the logic circuit from load > problems and (c) they don't need suppression diodes when used with > inductive loads. Basically, they are a one package solution for > switching 4-6A loads. When I start noodling with circuit designs in > the winter (the official season for circuit noodling) I plan on > playing > with them to see how well they work for my purposes (cheap, durable, > easy to repair). > > Frank P. > > > > > > > > > > -- > ---------- > Donald Shankin > Computer Engineering Undergrad > Blue Marble Security Member > IEEE Vice Chair, MTU Chapter > NSBE Telecommunications Chair, MTU Chapter > CAEL Partner > (507) 301-2499 > [email protected] > [email protected] > ---------- > > > --~--~---------~--~----~------------~-------~--~----~ You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat -~----------~----~----~----~------~----~------~--~---
