12V POWER SUPPLY DIY
DIY Switched Mode PSU?
Anybody know of an IC for making simple switched-mode power supplies? I need to drop 12V (from a lead-acid battery) to 5V, at up to 2 amps. Would be nice to be buildable on Veroboard, and the fewer coils I have to wind the better!
I’m sure something like this must already exist for automotive use, as engine management systems and the like are getting more complex and needing more power than can comfortably be dissipated by a simple 7805-type linear regulator.
The NSC part seems only to be available in SMD versions. I really need something that will fit on Veroboard.
I would like to know how to learn what you are asking. You sound saavy.
Typically I would be thinking about using resistors and a voltage divider network that would leave me with a 2.5 ohm, 5 volt,10 watt resistor to supply the circuit you are mentioning with a 3.5 ohm, 7 volt, 14 watt resistor in series or a 15 watt auto transformer that had a tap or allowed you to set the tap at 5 volts.
I am showing my ignorance by trying to answer your question probably.
fast diy electric motor running on 12v 15 amps from a modified atx computer power supply
|
|
Wahl Clip N Trim 2 Blade In 1 (21-Piece Kit) … |
|
|
Tripp Lite APS750 750W 12V DC to AC Inverter with Automatic Line-to-Battery 20-Amp Charger $289.00 12V DC, 120V AC – 120V AC – Continuous Power:750W… |
|
|
Thermaltake Mobile Fan II External USB Cooling Fan – Us $9.94 THERMALTAKE A1888 THERMALTAKE 80MM MOBILE FAN II USB POWER EXTERNAL CASE FAN A1888… |
|
|
15ft LCD TV Power Cord – IEC C13 Fits Most Major Brands $8.70 Be sure to look closely at the end of your current plug. Fits most major brands: Samsung Toshiba Lg Sharp Sony Sceptre RCA Panasonic Philips Vizio Mitsubishi Proscan Magnavox Auria Viore Tv LCD Plasma Dlp Led , Acer Asus Hp Samsung Viewsonic Dell Compaq Hanns-g Lg Planar Monitor Screen , Ps3 , Xbox 360… |
|
|
Coolerguys Thermal Fan Controller $21.00 Coolerguys Thermal Fan Controller Temperature controlled on/off switch Great to control power to fans in your home heater or even your computer case! Thermal sensor will turn the connected fans on at ~87°F (30°C) and leave them running until the temperature drops below ~80°F (27°C) External probe (450mm / 18 inch in length) so that you can monitor the temperature away from the controller Fem… |
|
|
Snap Circuits SC-300 $27.58 This educational kit is loaded with more than 300 projects to build. For example, kids can learn how transistors and capacitors function, and how to make time-delay circuits. In addition, this version includes circuits showing how oscillators and photo sensors work. Projects involve an AM Radio, Burglar Alarm, Radio Announcer and more. Contains over 60 parts. Requires 4 “AA” batteries, not include… |
|
|
Black & Decker BDL190S BullsEye Auto-Leveling Interior Line Laser / Stud Sensor Combination Tool $40.83 BULLS EYE AUTO LEVELING LASER LINE AND STUD FINDER *Patented auto-leveling technology *2 tools in 1 auto leveling laser level and stud sensor *Auto-leveling laser levels automatically without adjustments *Projects horizontal level laser line *Stud sensor detect wood, metal studs and live A/C wires *LCD display easy to read *Includes: protective storage case and batteries… |