The LM2002 is a 5 pin 8 watt amplifier. They work well but they are now obsolete. Sometimes you can still get them from catalog houses.The LM1897 is a low...
4767
manifold <manifold...
manifold_1
Jan 28, 2003 1:52 am
Do you have a schematic for this project? Is it on the web? ... the ... it...
4768
mwg_old <michaelg3...
mwg_old
Jan 28, 2003 2:19 am
No I don't. I just had these around in the parts collection and my 13 year old daughter is showing interest in learning about and building electronic...
4769
manifold <manifold...
manifold_1
Jan 28, 2003 5:47 am
That's a good project because it actually "does" somthing. If she gets interested then she can pursue the details of electronics later. Here is a data sheet...
4770
sreerangap <sreera...
sreerangap
Jan 28, 2003 11:47 am
Hi friends, I am searching for the infomation regarding QNX board and software. I would like to know more abt the qnx and how it works. if any one knows plz do...
4771
John G <NotColdEno...
notcoldenough
Jan 29, 2003 1:16 am
On the humorous side of things, you could modify the flashlight like I did for a "gag" present for my brother - Remove the batteries entirely and convert it to...
4772
Robert Graf
rgraf.geo
Jan 29, 2003 1:30 am
On Tue, 28 Jan 2003 11:47:06 -0000 "sreerangap <sreerangap@...>" ... As for boards that run QNX, try contacting them. As for learning about QNX, get the...
4773
Sreeranga
sreerangap
Jan 29, 2003 4:01 am
Thanks for the Info. Sreeranga ... __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. ...
4774
wenzel_98520 <wenz...
wenzel_98520
Jan 29, 2003 3:55 pm
Have several radios in the car. When speaking on one, many times there will be a feed back on one of the others. Is there a trick to shut off all the other...
4775
jabriol
jabriol2000
Jan 29, 2003 4:46 pm
Hi, does anyone know where I can find good info on troubleshooting power supplies transformer? __________________________________________________ Do you...
4776
manifold <manifold...
manifold_1
Jan 29, 2003 6:42 pm
Old texts and trouble shooting manuals might have a section on transformers but you don't really need a guide. Transformers are simple components. Perhaps you...
4777
scitrader2000 <mik...
scitrader2000
Jan 29, 2003 8:10 pm
I'm using a BX35 microprocessor for a robotics project. I'm stuck on the breadboard though. I put together a standard H-bridge to operate two DC drive...
4778
csakima
electronicho...
Jan 29, 2003 8:48 pm
How exactly are the transistors connected?? If you take a PNP and connected it's emitter to 12 volts, it's base would either be 12 volts (turned off) or 11.3...
4779
Kelvin Lau <kelau@...
cpcoop1
Jan 30, 2003 10:32 am
Hello all, I have 2 questions, and hope you can give me some pointers. If I have a microcontroller with a bunch of I/Os used as digital output and digital...
4780
Pablo E. Limon Garcia...
pelgv2
Jan 30, 2003 1:06 pm
... Hash: SHA1 ... Have you tried RTLinux??? http://www.fsmlabs.com/community/ Never tried but they said that its cool, and you can run it in slower-older ...
4781
Anmol Sondhi
voodoo_ind
Jan 30, 2003 1:40 pm
-- ____________________________________________________________________ "I don' mind being the last man on Earth - just to see if all of those girls were...
4782
Sylvain Bergeron
wolfie840ca
Jan 30, 2003 4:53 pm
Hello there. This requires a very simple solution: 1) For your outputs, use an octal bus transceiver like a 74LS245 (20 pin chip) that will isolates 8 lines....
4783
Sylvain Bergeron
wolfie840ca
Jan 30, 2003 4:54 pm
Hello there. This requires a very simple solution: 1) For your outputs, use an octal bus transceiver like a 74LS245 (20 pin chip) that will isolates 8 lines....
4784
manifold <manifold...
manifold_1
Jan 30, 2003 10:04 pm
That will ot protect against over voltages, reversed polarity and ESD that may be present on external I/O lines. For example, if one or all of the inputs are...
4785
Reid Simonsen
rsimonus
Jan 30, 2003 10:25 pm
Is there a way we can hack on egg timer or kitchen countdown timer with LCD? I could not find any that has LED instead of LCD. I bought it at the Walmart. It...
4786
manifold <manifold...
manifold_1
Jan 30, 2003 10:42 pm
Kitchen timers are made by the millions. They are made a cheap as possible without regard to repair or accessiblilty. My kitchen timer at home has a blob on...
4787
manifold <manifold...
manifold_1
Jan 31, 2003 1:08 am
Ok, I found a partial pinout and an aplication note for the LM1897. It appears in the 1986 NS Linear Applications Handbook. Applications Note AN-407. It is 7...
4788
Kelvin Lau <kelau@...
cpcoop1
Jan 31, 2003 1:29 am
Thanks Sylvain and Manifold for the suggestions!! I think for my application, the series resistor + cap + zener will be most suitable. Let say the maximum...
4789
Kelvin Lau <kelau@...
cpcoop1
Jan 31, 2003 1:31 am
In the last posting, I meant "I'm reluctant ... lot of electronics to do a simple thing. I have seen circuits somewhere that used 3 op-amps to measure the...
4790
manifold <manifold...
manifold_1
Jan 31, 2003 2:24 am
... Wow, 15mA is a lot for basic I/O. Can you work with less? Here's why, at 15ma the maximum resistance you can have in series with the I/O line will be low....
4791
hendra hermawan
hhermawan2002
Jan 31, 2003 10:29 am
Dear member of electronics group, Does anyone know, the place to repair or to get the new simoreg parts (SIEMENS): - Power/Interface board PN A1-106-100-831 or...
4792
Reid
rsimonus
Jan 31, 2003 4:52 pm
Read below with **** which I put comments on it. ... From: manifold <manifold_1@...> To: Electronics_101@yahoogroups.com Sent: Thursday, January 30, 2003...
4793
manifold <manifold...
manifold_1
Jan 31, 2003 7:09 pm
... LCD run by digital or logic on/off signal. Maybe I am not sure what you mean by ac signal. Do you mean AC signal same as house power by AC with low power?...
4794
Kelvin Lau <kelau@...
cpcoop1
Jan 31, 2003 9:37 pm
I'm using a Microchip PIC16F874. Which can source 25mA per I/O, but have a max. of 200mA sourcing capacity for the whole chip. I don't quite understand your...
4795
manifold
manifold_1
Jan 31, 2003 11:36 pm
Here is a schematic of a possible protection circuit. Now do you see where the 1V drop comes from? If the I/O pin on the processor is at 5V and 15mA flows ...
