Post Created date
DC step-up converter - any experience?
Thanks for the ideas. Unfortunately I do not have a microprocessor on the board so I was looking for boost controller that someone may have had a good experience with.
Saturday, 15 January 2011 - 19:56
P-Mosfet & Mosfet Driver problem
If you are concerned about switching speed (especially with high capacitive gates), you could use a photovoltaic gate driver and use it to switch a capacitor to the gate of your...
Monday, 21 September 2009 - 17:00
Driving a Power Mosfet
Mosfet gates can have several thousand pF of capacitance. Generally, the higher the drain current rating, the higher the gate capacitance. This becomes a problem when you try to...
Wednesday, 8 July 2009 - 12:01
ExpressPCB footprint widths
You figure the footprint was designed for solder paste not for manual solder iron. Make 2 for proto and one for production if you have to.
Friday, 24 April 2009 - 00:52
ExpressPCB footprint widths
I have a tendency to make my pads slightly longer for soldering. I use Target3001 for up to 8 layer boards. I've built up the libraries over the years and almost all of the...
Friday, 24 April 2009 - 00:50
IR LED questions
Thanks guys. I am assuming that since there are universal remotes, that all TV brands use the same type of IR LED, whether that is 940nm, 850nm, etc.. So if current controls the...
Thursday, 23 April 2009 - 22:28
Capacitor Voltage
When you say your ADC is unstable, do you mean a few counts? You could be fighting this forever.... What is your reference voltage and how is is configured? Looks like the...
Monday, 12 January 2009 - 01:46
Overvoltage Protection
Since your 5.25 volts is derived from an ATX power supply, it is a switching power supply. Overvoltage protection is already built in to some extent. If you need serious...
Sunday, 11 January 2009 - 15:40
Overvoltage Protection
Alfredo, When you say "overvoltage", keep in mind that the diode you mention is a TVS diode designed to only suppress quick transients or "spikes". If you need to protect from a...
Sunday, 11 January 2009 - 02:50
My board has old style AVRISP connector
Thanks for all of the help! I am looking into all of these possible solutions.
Wednesday, 13 August 2008 - 20:30
What are 0 ohm resistors for?
They also make DED's or Dark Emitting Diodes.
Wednesday, 5 December 2007 - 14:12
Development of an week average temperature meter
I am developing a high-end industrial unit. For the sensor I use the Sensiron SHT-75. It is about $25 just for the tiny 4 pin device, but it fit my application.
Wednesday, 21 November 2007 - 18:36