Search found 316 matches

by Gorgon
Tue Nov 07, 2006 3:20 pm
Forum: General Discussion
Topic: Soldering Irons
Replies: 7
Views: 2597

Standard pen-style is very good. The 'more ergonomic' is a pain, since I'm lefthanded. A shorter distance to the tip could be ok, if the heat aspect is taken care of. It's no use to have short distance and burnt fingers. Some sort of telescopic tip could be an idea, to be used where a longer distanc...
by Gorgon
Fri Oct 27, 2006 6:48 am
Forum: General Discussion
Topic: Night club dance lighting
Replies: 10
Views: 3173

Hi Bodgy,
I'm Norwegian and speak English, maybe we can compare notes? :grin:

TOK ;)
by Gorgon
Mon Oct 16, 2006 1:02 pm
Forum: General Discussion
Topic: Student needs help for high school science teacher
Replies: 11
Views: 2978

I like your solution Gorgon, but maybe even simpler, would be to break out the line at a conveniant point and drop down to a simple L pad potentiometer mounted at the speakers pulpit. You know, the way they used to do it in the dark ages :grin: Thanks Robert, Yes, I remember the speakers from my sc...
by Gorgon
Sun Oct 15, 2006 2:41 pm
Forum: General Discussion
Topic: Student needs help for high school science teacher
Replies: 11
Views: 2978

If you want a cheap remote, why not use a LED pointing device and a simple receiver that toggles a flipflop on-off-on ... for each blink. Controlling a relay that insert a resistance in the speaker line.

TOK ;)
by Gorgon
Sat Sep 30, 2006 5:24 pm
Forum: General Discussion
Topic: back up power supply
Replies: 20
Views: 4602

Philba is correct If you don't drive the motor all the time through this inverter and makes a static switch between backup power and grid power, you'll loose the phase when the grid goes. You then need to stop the motor and restart it again with the backup power, and this time it takes way more than...
by Gorgon
Thu Sep 21, 2006 4:24 pm
Forum: General Discussion
Topic: vacationing in germany / austria
Replies: 2
Views: 1109

Yes, I remember the high voltage demo in Munich. Are they still doing the Faraday demo with a man inside one of the discharge globes/electrodes? I remember they put a 1m2 glass plate between the electrodes and pumped up to over 1MV before the bang. In -74, I was very impressed!!

TOK ;)
by Gorgon
Thu Sep 21, 2006 4:12 pm
Forum: General Discussion
Topic: Need to locate a doc...
Replies: 2
Views: 1259

As far as I know this is a standard FAT16 format. Look here and see if you can use this. http://staff.washington.edu/dittrich/misc/fatgen103.pdf

TOK ;)
by Gorgon
Tue Aug 29, 2006 2:21 pm
Forum: General Discussion
Topic: Help With Acronym
Replies: 3
Views: 1168

SLIMUS - SuseLInuxMultiUserServer :???:

TOK ;)
by Gorgon
Wed Aug 23, 2006 2:59 pm
Forum: General Discussion
Topic: Lead Acid Batteries: When to charge?
Replies: 24
Views: 6058

6.8 - 6.9V fixed constant voltage, would keep your battery top charged at 25 deg. C. If you have higher ambient temperature, you should reduce the voltage some. You can see the table her: http://www.powerstream.com/SLA.htm . You could use a NTC to compensate in the power supply. (Thats what we do in...
by Gorgon
Sat Aug 12, 2006 10:46 am
Forum: General Discussion
Topic: Programming a microchip to speak text
Replies: 14
Views: 4815

The Roman Black will need a rather sharp filter to make the sound good at 1kB/s, since the 'silence' or pause sequences in the sound will have a ripple of 4kHz. This low max frequency will also increase the noise level. I suppose that is why 15625Hz is use to sample the sound, making nearly 2kB/s da...
by Gorgon
Thu Aug 10, 2006 3:58 am
Forum: General Discussion
Topic: Programming a microchip to speak text
Replies: 14
Views: 4815

Hi, Some years ago I was involved in a design of an alarm announcement system with a number of stored messages. It was built around a speech co-processor from DSP Group, Inc, CT8016 and a codec from OKI, MSM7578. This setup could record and playback recorded speech with telephone quality. It could a...
by Gorgon
Tue Jul 25, 2006 3:51 pm
Forum: General Discussion
Topic: Audio Frequency coversion for hard of hearing.
Replies: 9
Views: 2460

Hi Ajury, If the boy can hear at least one frequency range, my idea would be to make this sound just one frequency, but interrupted with a faster rate for the rising frequency (of today), and a slower rate with the falling frequency (of today). just a slower or faster beeping of one frequency. I wou...
by Gorgon
Sat Jul 08, 2006 5:41 am
Forum: General Discussion
Topic: -JPKNHTP
Replies: 2
Views: 1082

Hi JPKNHTP,
I found this http://pdf1.alldatasheet.co.kr/datashee ... 1650A.html, but it is an 18 pin chip. It is on the other hand a telephone/ dialer chip, so I post it for you to check out.

TOK ;)
by Gorgon
Fri Jul 07, 2006 5:27 am
Forum: General Discussion
Topic: another capacitor question???
Replies: 50
Views: 13141

In the correct direction. Almost like a 'fake' 3 phase motor.

TOK ;)
by Gorgon
Sat Jul 01, 2006 4:34 pm
Forum: General Discussion
Topic: Another Recharge Batt Operated Device Bites the Dust
Replies: 12
Views: 3635

I've one example of this (Beside all the mobile phones I've had) In -94 I bought a Siemens Gigaset Wireless Phone system. The handset has rechargeable cells. Less than a year after the battery gave up keeping the charge. Instead of buying the same type of cells, I bought some slightly more expensive...