Search found 33 matches
- Mon Feb 07, 2005 10:13 am
- Forum: General Discussion
- Topic: Analog design training
- Replies: 1
- Views: 1639
Analog design training
Hey Everyone,<p>I'm looking at enhancing my analog skills and found the following site.<p>http://www.ardem.com/<p>It seems very interesting but I was wondering if anyone else knew of training that involved practical analog design. Google wasn't extremely helpful.<p>Thanks...
- Mon Jan 24, 2005 5:36 pm
- Forum: General Discussion
- Topic: supper simple transmitter question
- Replies: 18
- Views: 7101
supper simple transmitter question
http://www.scitoys.com/scitoys/scitoys/radio/computer/computer_controlled_transmitter.html <p>Has a super simple computer controlled transmitter. Would this be a practical circuit for hobbyists? Is it low power enough to be fcc compliant? The site uses an am radio for demodulation and only transmit...
- Thu Jan 20, 2005 12:19 pm
- Forum: General Discussion
- Topic: solder past dispensers
- Replies: 2
- Views: 2095
solder past dispensers
Does anyone have a solder paste dispensor setup in their lab? I just wanted to see what other people were working with - especially their source for compressed air for the dispenser.
- Thu Jan 13, 2005 7:30 am
- Forum: General Discussion
- Topic: twisted pair
- Replies: 3
- Views: 2209
twisted pair
Does anyone know the capacitance per foot of 22 gauge twisted wire pair? Or a website containing such info?
- Tue Jan 04, 2005 5:48 am
- Forum: General Discussion
- Topic: atx power supply for hobby electronics
- Replies: 10
- Views: 4869
Re: atx power supply for hobby electronics
Exactly what I need - thanks very much.
- Mon Jan 03, 2005 6:55 pm
- Forum: General Discussion
- Topic: atx power supply for hobby electronics
- Replies: 10
- Views: 4869
atx power supply for hobby electronics
does anybody know how to wire pc power supplies for use in hobby electronics? google hasn't yet provided the needed information.
- Mon Jan 03, 2005 5:57 pm
- Forum: General Discussion
- Topic: Who makes the best basic compiler for Microchips Microco
- Replies: 8
- Views: 4803
Re: Who makes the best basic compiler for Microchips Microco
I've also used pic basic pro and have enjoyed it. Their manual is very good in my opinion and explains every code word in detail.
- Wed Nov 17, 2004 4:01 am
- Forum: General Discussion
- Topic: halogen lamps
- Replies: 9
- Views: 5190
Re: halogen lamps
Yeah after working on it and only applying the 12volts to the relays - they're busted. Does anyone know of websites that have tips for wiring ac electrics (safety - standard practices)? I'm gonna have to build my own relay board.<p>Thanks
- Mon Nov 08, 2004 5:38 am
- Forum: General Discussion
- Topic: halogen lamps
- Replies: 9
- Views: 5190
Re: halogen lamps
I applied 13 volts externally when the board was powered down and I measured the relays resistance. The relay conducts when the supply is 13 and not 18. I think I'm gonna cut the trace and insert a 7812 regulator circuit to bring the voltage down.
- Sun Nov 07, 2004 12:02 pm
- Forum: General Discussion
- Topic: halogen lamps
- Replies: 9
- Views: 5190
Re: halogen lamps
After looking at the circuit that I'm using to drive the halogen lamp - I have some more questions concerning 12dc 120volt ac relays.<p>The circuit's high volt dc supply is around 18 volts. The relay has a fet on the low side of the relay. When I turn on the gate the relay's coil can get 18 volts pu...
- Fri Oct 29, 2004 6:49 am
- Forum: General Discussion
- Topic: halogen lamps
- Replies: 9
- Views: 5190
Re: halogen lamps
I was talking about dimming and stuff like that. The lamp would be ones used in toaster ovens. I opened up the toaster oven to find a relay board. There are three control signals to the board. NMI HT and LT. The HT and LT go to two control fets that work on the relays to the toaster oven elements. I...
- Tue Oct 26, 2004 7:08 pm
- Forum: General Discussion
- Topic: halogen lamps
- Replies: 9
- Views: 5190
halogen lamps
How does one drive a high wattage halogen lamp?
- Fri Oct 22, 2004 11:09 am
- Forum: General Discussion
- Topic: Cheap type of solder mask
- Replies: 4
- Views: 3075
Re: Cheap type of solder mask
Minimum buy on this is 24 bottles - but I'll try other distributors and get it from them. Exactly what I need. Thanks alot.
- Fri Oct 22, 2004 8:34 am
- Forum: General Discussion
- Topic: Cheap type of solder mask
- Replies: 4
- Views: 3075
Cheap type of solder mask
Is there any type of acrylic or epoxy or some material that I could use as a cheap form of solder mask for solder paste reflow just around components? <p>It would have to survive 250 celcius and be easy to use. I was thinking nail polish - but I don't know if it would burn or not. I guess I might ex...
- Tue Oct 19, 2004 4:52 pm
- Forum: General Discussion
- Topic: 68000 ?
- Replies: 0
- Views: 1430
68000 ?
I see the 68000 slowly going out of existence. I can only find chips in the Jameco catalog and they're going too. Are there any processors / manufacturers that will keep the chip going?<p>I'd like to use it because its easy to understand - and flexible too. And it has a low pin count.