Post Created date
High side switch for 12 V
Similar to nleahcim, but example with a npn, not nmos driving a P channel mosfet. No idea on load, inrush currents etc.. you need to watch these specs. oddbudman
Tuesday, 23 March 2010 - 04:01
230V to 24V/500mA
http://www.powerint.com/ Plenty of reading at this site. As others have warned this is not childs play. With the costs involved with approvals etc, it may be worth considering...
Friday, 19 March 2010 - 08:41
74hc165 weak output? < solved >
You don't have the pins somehow misconfigured (set as outputs)? Maybe a avr intergrated peripheral running? You could add a resistor in series just to check that it is the AVR...
Saturday, 13 March 2010 - 10:44
importance of capacitor choice (an observation)
Alwelch is right regarding matching capacitor type to application. Also watch for the different classes of capacitors in ceramics. I've been burnt by this in the past. I had a...
Thursday, 4 March 2010 - 01:52
dc to dc
Try this, it might work. oddbudman
Wednesday, 3 March 2010 - 14:59
Using NPN-PNP transistors to run a LED array
You don't really need to use a darlington for the PNP if you don't want to. You can use a half decent PNP without too many issues, just increase the base current sourcing a...
Wednesday, 3 March 2010 - 14:31
dc to dc
Just thought i'd wack up a step down schematic with external pnp. oddbudman
Wednesday, 3 March 2010 - 01:56
Automotive failures
I thought that this was an interesting read, not to say if its right or wrong, definitely thought provoking. http://www.nutwooduk.co.uk/downloads/Toyota.doc I would not be...
Friday, 26 February 2010 - 14:15
4610X-R2R-103 Resistor network
http://www.royalohm.com/pdf/resi... network.pdf Would any on this datasheet do the trick js?
Wednesday, 24 February 2010 - 11:56
4610X-R2R-103 Resistor network
Any luck js on finding what you were after?
Tuesday, 23 February 2010 - 09:31
30 ga solid wire to connector ideas
I've used insulated transformer winding wire in the past, soldering direct to pin headers and dip sockets. I've also used this method and soldered direct to soic pcb footprints,...
Tuesday, 23 February 2010 - 00:26
Programming atmega644 in ISP with STK500
Not the best circuit, that is if this: http://frank.circleofcurrent.com/pics/gps_logger_circuit.png is the circuit you are using. Where is the decoupling? Where is the reset...
Friday, 19 February 2010 - 04:30

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