Good call, just be careful around those caps On Sat, Aug 22, 2009 at 6:13 PM, Gregory Pwneror <sockles...@gmail.com>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 > <frank.pitte...@gmail.com>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 dtsha...@mtu.edu dshan...@gmail.com ---------- --~--~---------~--~----~------------~-------~--~----~ You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -~----------~----~----~----~------~----~------~--~---
