Thank you for the advice, Frank. I haven't thought of it that way, that's very helpful.
—Mike Måne Message sent by way of mobile device On Aug 23, 2009, at 11:12 AM, Frank Pittelli <[email protected]> wrote: > > Mike Mane wrote: >> 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? > > The venerable "7805 Voltage Regulator" would be the weapon of > choice, as > described here: > > http://www.radioshack.com/product/index.jsp?productId=2062599 > > It also comes in other voltages, with "78XX" designations, where XX is > the voltage. They come in 1A and 3A packages and can be used with > little or no external components (depends on how hard you are using > them). They are sold by the millions by every electronics supplier > around the world. > > Hook up the input supply voltage (up to 35v) on Pin 1, Ground on Pin 2 > and draw your regulated voltage from Pin 3. > > NOTE: Even with a voltage regulator, it is *NOT* recommended that you > power logic circuits or receivers from the same battery used for > motors > drawing large currents. The large current/voltage spikes and the > large > amount of electrical noise generated by the motors can affect and/or > destroy the logic circuits. Whenever possible, especially in combat > vehicles of any kind (tanks, boats, etc), you should use a separate > battery to drive logic circuits and receivers. That also allows you to > power up the electronics and test things without the main battery > supply > turned on, an additional safety feature. You would still use a > voltage > regulator on the separate battery, allowing you to use any convenient > battery voltage (not many 5v batteries to be found out there). > > Frank P. > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
