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Re: Which voltmeter is correct?
yes. You can use something like the pi filter in a PC supply. basically a filter cap, then a choke coil in series, and then again a filter cap. ST
By Stefan Trethan <stefan_trethan@...> · #27987 ·
Re: Which voltmeter is correct?
I guess this brings up another issue. I imagine my car will appreciate if I clean up this ringing on the discharge of the SMPS. I don't imagine it will be good to let all that noise out to the rest of
By Daniel Nicoson <A6intruder@...> · #27986 ·
Re: Sort of OT - Air compressors for cars that run on 12 Volts DC...
Yes and no. As this is all in the planning stages at this point, I am not sure yet which way I will go. For the testing purposes of the machine, I could simply switch the compressor on to release the
By lcdpublishing · #27985 ·
Re: AVR programmer question
I just want to let you know i found a workaround for that. I checked the otuput pins of the LPT and found pin 9 (data 7) is low in "idle" while for example pin 8 (data6) is high. So i simply moved the
By Stefan Trethan <stefan_trethan@...> · #27984 ·
Re: Low & high current switch
No,its current withstanding capacity of the contacts. Regards, Anita Kuber leon.heller@... Sent by: Electronics_101@... 04/26/2006 01:14 PM Please respond to
By Anita.Kuber@... · #27983 ·
Re: Low & high current switch
By Leon Heller <leon.heller@...> · #27981 ·
Re: Sort of OT - Air compressors for cars that run on 12 Volts DC...
But you are using a air tank and a magnetic valve to operate ram, are you not? ST
By Stefan Trethan <stefan_trethan@...> · #27982 ·
Re: Which voltmeter is correct?
If the meters have a peak or rectifying circuit inside instead of a averaging circuit they will pick up more of the ringing. Accuracy at higher requency is never a given. If you are unsure you could
By Stefan Trethan <stefan_trethan@...> · #27980 ·
Low & high current switch
Hello Everybody, In one of the project I am using high current switches. But my question is how to identify high and low current switches? Please help me in this regard. Regards, Anita Kuber Executive
By Anita.Kuber@... · #27979 ·
Which voltmeter is correct?
Working on my SMPS circuit tonight. This past weekend I fully instrumented the circuit with 4 digital voltmeters. I have two that are exactly the same, cheap Chinese DVM's that appear to give
By Daniel Nicoson <A6intruder@...> · #27978 ·
Re: newbie
wrote: I just uploaded to the files section (Popelish folder) a simple schematic for a circuit that uses mostly dirt common parts and converts a DC control voltage to PWM output for a small DC motor.
By John Popelish <jpopelish@...> · #27977 ·
Re: Sort of OT - Air compressors for cars that run on 12 Volts DC...
Problem with vacuum is now you are only working with at best a 15 psi pressure differential. He started the problem by stating he needs about 100 psi to make things work. I like the several gallon
By Daniel Nicoson <A6intruder@...> · #27976 ·
Re: Sort of OT - Air compressors for cars that run on 12 Volts DC...
Double action cylinders, vacuum or pressure, doesn't matter. Just a matter of which port gets the connection. You can get 80$r compressors easily thru Harbor Freight and Big Lots. usually 4 gallon
By Gory Corey @MinionsWeb.com · #27975 ·
Re: Sort of OT - Air compressors for cars that run on 12 Volts DC...
I have one too, I wouldn't consider using it in the shop, I would consider it a toy, marginal at that. When in doubt, turn the page upside down and look at the drawing again. :D Vacuum could be an
By Robert Hedan · #27974 ·
Re: newbie
PWM can be created using a comparator. This is the recipe for PWM for voice or data transmission: The clock signal is transformed to a triangular wave and fed into the comparator terminal that usually
By signal snatcher <signalsnatcher@...> · #27973 ·
Re: Sort of OT - Air compressors for cars that run on 12 Volts DC...
I have a couple of them. Down right handy when you have a flat. Mine has a pot metal piston, as is the cylinder. If you get 300 PSI's out of it, then I would really be surprise. I don't remember how
By Bruce <mymailfilter@...> · #27972 ·
Re: Sort of OT - Air compressors for cars that run on 12 Volts DC...
I have one. It's noisy, even outdoors. The air hose is very short. And the paperwork that came with it said that it shouldn't be run for more than about 15 minutes straight, or it would get too hot,
By Roy J. Tellason <rtellason@...> · #27971 ·
Re: Sort of OT - Air compressors for cars that run on 12 Volts DC...
Oh man I hope it doesn't have a plastic piston! At 300 PSI, that would be downright scary to use! I don't suspect these things are engineered to last for hundreds of hours of use, but if I can get it
By lcdpublishing · #27970 ·
Re: Sort of OT - Air compressors for cars that run on 12 Volts DC...
Well, the cheap ones can't be great quality, i think they have plastic pistons. I even saw a webpage of some guy rebuilding one for quality a long time ago. As i said before i use a fridge compressor,
By Stefan Trethan <stefan_trethan@...> · #27969 ·
Sort of OT - Air compressors for cars that run on 12 Volts DC...
Hi guys, This one is a bit O.T. sort of. I am working on my mini-mill project (which is very much electronics) and when I get stuck on the electronics and need to dwell and think a bit, I go back to
By lcdpublishing · #27968 ·