Post Created date
3.3vdc power from 24vac
mycal, the 34063 is a generic switching regulator. Many companies make a version of this. st, taiwan semiconductor, onsemi etc etc Use the '34063' number in your keyword search...
Thursday, 4 June 2009 - 07:00
3.3vdc power from 24vac
I'd be looking at the 34063 also. Generic, easy to get and adequate. oddbudman
Thursday, 4 June 2009 - 05:42
SMD Resistors-Capacitors collection
Like Kartman i use the Altronics set, cheap and cheerful. Provided you show some discipline its pretty easy to keep it organized. oddbudman
Sunday, 31 May 2009 - 11:51
component package size 0805 and 0402
0402 resistors might not have text on them
Wednesday, 27 May 2009 - 13:27
PWM problems with P-Channel mosfet
Is this wired on a PCB? If so poor pcb tracking could be causing voltage drop on VCC when under the higher loads. Your schematic is lacking capacitors - do you have any in your...
Wednesday, 27 May 2009 - 00:47
10W or 20W LED driver, any circuits or suppliers?
Tridonic Atco Meanwell Osram All these above companies should have a controller to suit your needs. I'd think long and hard before making the driver yourself. Isolation is even...
Friday, 22 May 2009 - 02:42
Commit to Copper
I agree ikdor and Jim. Add a resistor between the port pin and the transistor collector. That way no problem if set port pin as an output. A minor thing but you could probably...
Wednesday, 13 May 2009 - 01:57
Voltage Reference with Zener Diode
Don't be surprised if its broken. I've had rotten luck with some precision references in the past. oddbudman
Tuesday, 12 May 2009 - 11:29
mcu circuit problem
Here's a tip. If you want to be silly enough to power a circuit like this at least have the decency to properly label the AVR i/o pins in the schematic. Watch you don't leave the...
Sunday, 3 May 2009 - 09:10
Schematic- and PCB design programs
LTspice IV Required OS: Windows XP also works well in Linux using Wine. Software is free to use. Quote: LTspice IV is a high performance Spice III simulator, schematic capture and...
Saturday, 18 April 2009 - 05:42
simple transistor switch problem
why not run this in common emitter mode instead?
Saturday, 4 April 2009 - 01:51
MCPCB manufacturers
"30W within about 20 square cm" Your going to need a pretty sweet heatsink for this. I'm sure you could find a decent supplier online, I know edaboard has quite a few links....
Friday, 3 April 2009 - 01:22