Search found 316 matches

by Gorgon
Wed Mar 22, 2006 3:27 pm
Forum: General Discussion
Topic: need a 9v cut off switch, any ideas?
Replies: 9
Views: 2129

Re: need a 9v cut off switch, any ideas?

Why not power the circuit from the load side, and 'kick-start' it with a pushbutton when the battery is charged. To make the driver hi-z, just add a transistor, a resistor and invert the comparator output. This should make a stable off condition, the transistor will release the gate when power disap...
by Gorgon
Sat Mar 11, 2006 2:26 am
Forum: General Discussion
Topic: Help ! I am stuck on stupid today..
Replies: 25
Views: 6602

Re: Help ! I am stuck on stupid today..

Hi Dacflyer,
Have you received the display yet?

TOK ;)

PS: 57mm = 2.24"

<small>[ March 11, 2006, 02:31 AM: Message edited by: Gorgon ]</small>
by Gorgon
Sat Mar 11, 2006 2:17 am
Forum: General Discussion
Topic: Inducing a signal on to Tv to display a message while wa
Replies: 32
Views: 10047

Re: Inducing a signal on to Tv to display a message while wa

Hi, I don't know if this is relevant, but once, many years ago, I designed this type of product based on a chip from Fujitsu, the MB88324AP. I think this is more or less obsolete today, but I found a modern version, and much more advanced, the MB90050 here: http://edevice.fujitsu.com/fj/DATASHEET/e-...
by Gorgon
Thu Mar 09, 2006 1:40 pm
Forum: General Discussion
Topic: Power supply needed for a Futerlec EPROM Programmer
Replies: 2
Views: 1289

Re: Power supply needed for a Futerlec EPROM Programmer

Hi DAVID,
I found this catalog in Thailand. It states that the spep plus needs 10VDC, but no amps. I hope this helped!
http://www.etteam.com/catalog/Catalog2004/Page50-55.pdf

Middle of page 51.

TOK ;)
by Gorgon
Fri Mar 03, 2006 6:53 am
Forum: General Discussion
Topic: need a reflecting light sencor "help Please!!!!&quo
Replies: 10
Views: 2302

Re: need a reflecting light sencor "help Please!!!!&quo

Hi,
I know of gallstones, and they ar not the same as kidney stones! Had to remove my gallbladder because of the stones. I don't think you do the same with kidneys :D

TOK ;)
by Gorgon
Sat Feb 25, 2006 2:58 pm
Forum: General Discussion
Topic: Data sheet ULS2003H-883
Replies: 3
Views: 915

Re: Data sheet ULS2003H-883

Hi Dacflyer,
I would suppose that this is a high voltage variant of the ULN2003 chip. Like this ULS2803 version is with the ULN2803, with one driver more (8 vs 7). http://www.allegromicro.com/sf/2801/

TOK ;)
by Gorgon
Thu Feb 23, 2006 4:04 am
Forum: General Discussion
Topic: GE RR9 Relay Replacement
Replies: 3
Views: 1527

Re: GE RR9 Relay Replacement

Hi, I would think a small thermostatic switch and some form of heater/lamp solution is the best here. The thermostat comes on when the ambient temperature is around 32F/ 0C and keeps the temperature inside the relay at this level. If you want to seal the unit hermetically you have to do it under ext...
by Gorgon
Sun Feb 19, 2006 11:48 am
Forum: General Discussion
Topic: question about STR404-130S
Replies: 4
Views: 1165

Re: question about STR404-130S

Hi Dacflyer,
I sent it to earthlink, thats the one in your profile.

You can email me via my profile to send me a functional email address.

TOK ;)
by Gorgon
Sat Feb 18, 2006 3:19 am
Forum: General Discussion
Topic: question about STR404-130S
Replies: 4
Views: 1165

Re: question about STR404-130S

Hi Dacflyer, The STK403-130 is listed as present on this Sanyo website http://service.semic.sanyo.co.jp/semi/eng/search/search_num.asp?class1=PSEARCH&req=f&textfield1=STK403-130&popupinclude=0&textfield2=&popupand=1&status3=present&preview_count=50&ro w_count=1&dict_on=0&Submit322=Search but no data...
by Gorgon
Fri Feb 17, 2006 2:28 pm
Forum: General Discussion
Topic: Information on 2.3m satellite dish
Replies: 6
Views: 1603

Re: Information on 2.3m satellite dish

Hi Shaynes, First of all, I'm no expert on this. I can recall having seen a double horn setup for both horizontal and vertical polarisation. This was a rather long contraption. It might be that your disc setup is for a general reception system. Just an idea :) TOK ;) <small>[ February 17, 2006, 02:2...
by Gorgon
Fri Feb 17, 2006 12:54 pm
Forum: General Discussion
Topic: Convert 120 VAC to 5 pulsating DC.
Replies: 14
Views: 3165

Re: Convert 120 VAC to 5 pulsating DC.

Hi m2mike, If it is only the signal you want, you could also use an optocoupler to transfer it galvanicly isolated from the power grid. If you use a normal optocoupler, the output would be halfwave rectified to 60Hz. You would of course need to protect the led in the optocoupler from the reverse vol...
by Gorgon
Mon Feb 06, 2006 4:16 pm
Forum: General Discussion
Topic: "Perfect" LED current limiting challenge
Replies: 255
Views: 63525

Re: "Perfect" LED current limiting challenge

Hi Al, Yes, this was my concern. I know the PIC's are protected against brownout, but when it happens the functionality of the circuit must be designed for this, both regarding the battery load/ overload and the return to a safe state for the driver electronics, when this happens. I think one of the...
by Gorgon
Sun Feb 05, 2006 5:46 am
Forum: General Discussion
Topic: * WANTED * .......HDSP-3900
Replies: 3
Views: 2217

Re: * WANTED * .......HDSP-3900

Hi Dacflyer, I suppose this is not an alternative either, but here it is. The price is in NOK. http://no.farnell.com/jsp/endecaSearch/searchPage2.jsp?Ntt=hdsp3900&Nty=1&N=401&Ntk=gensearch I could buy one for you, together with a company order(or the postage would kill the deal), let me know. TOK ;)
by Gorgon
Sun Feb 05, 2006 5:33 am
Forum: General Discussion
Topic: "Perfect" LED current limiting challenge
Replies: 255
Views: 63525

Re: "Perfect" LED current limiting challenge

Hi Al,
I think this might be an issue:

4. How to protect the PIC from brownout when cell V drops? I suppose the PIC is powered from the same cell?

TOK ;)