Thanks for the advice guys - I'll check out the TIL-311. There's some on eBay for $6 a unit so I'll grab one and see if I can build a circuit around it. FYI...
10839
Chris
proculeisgay
Jun 1, 2004 1:01 am
LCD was never an option for my DRO...........it was the 7 segment LED or what ever I wanted to use, yes I got some where :) I will explain later! Cya ... From:...
10838
Dave Mucha
dave_mucha
Jun 1, 2004 12:42 am
In thinking about this idea, it seems the recent thread regarding a DRO might cross this project and intertwine well enough that they can be used for one or...
10837
Dave Mucha
dave_mucha
Jun 1, 2004 12:32 am
... three ... kit ... It looks like a set of 6 LED's that are double decimal would be needed, plus a driver of some sort. Since many scopes are driven from a...
10836
Mario Lopez
linked82
May 31, 2004 11:51 pm
... Almostˇˇ On the datasheets I've seen 7818 and 7820 regulators, but no 7819 :( . As said Stephan, one solution could be add a diode between ground...
10835
JanRwl@...
janrwl
May 31, 2004 10:54 pm
Gord: The TIL-311 is a "neat" 7-segment (LED) readout with INCLUDED driver and 4-bit latch. That is, you only need to feed it with BCD bits 0-3 (it will also ...
10834
Stefan Trethan
stefan_trethan
May 31, 2004 10:22 pm
... maybe the "add diodes in the ground leg" version ;-) ST...
10833
JanRwl@...
janrwl
May 31, 2004 10:07 pm
In a message dated 5/31/2004 6:19:07 AM Central Standard Time, jitveit@... writes: I was thinking about using 7819 and 7919 regulators. Hmmm... I had...
10832
leon_heller
May 31, 2004 7:06 pm
... three ... kit ... If you want them grouped like that, you will probably have to design it, or get it designed, from scratch. I'd suggest using a Maxim ...
10831
Stefan Trethan
stefan_trethan
May 31, 2004 6:42 pm
... If you have a bulb which is really hard to change (e.g. attic, staircase, requiring 100 ladders to reach) you can put a diode in series with the bulb. it...
10830
rgsparber@...
rgsparber
May 31, 2004 6:31 pm
... St, I think you are right. I was assuming a 5V bulb. Somewhere I recall that the life of a bulb corrolates to the 12th power of the applied voltage. Rick...
10829
Todd Sabuncu
todd_sabuncu
May 31, 2004 6:29 pm
Hi Steve, I know very little; I know that - 1V5 is the "Electronics way" to write 1.5 V - there are 4 resistors - there are 3 capacitors, but beats me why they...
10828
Steve
alienrelics
May 31, 2004 5:35 pm
... It is a good and helpful group. Take a look on the group home page http://groups.yahoo.com/group/Electronics_101 and you'll see a multivibrator. Can you...
10827
Stefan Trethan
stefan_trethan
May 31, 2004 4:53 pm
... I do not remember any suitable project but it would not be hard to build i guess. use latching bcd->7 segment decoders. then send one adress byte to your...
10826
gordtulloch
May 31, 2004 4:29 pm
Hi there: I'm working on setting up the electronics for an automated telescope project, and would like to have a display of the current coordinates on the...
10825
Roy J. Tellason
rtellason
May 31, 2004 3:16 pm
... For the smaller ones, you usually go by size. For 1W and up parts, they're often marked with the wattage....
10824
Mario Lopez
linked82
May 31, 2004 2:13 pm
Don't forget that the drop-out voltage will raise the disipatted power. In your case, transform 28V in 19V will give yu a drop-out voltage of 9 V, so if your...
10823
Todd
todd_sabuncu
May 31, 2004 10:54 am
Hello All, I want to thank this helpful and generous group for all of your input. Thanks to the messages from Roy Tellason, Leon Heller, Ben Englund, Stefan...
10822
Stefan Trethan
stefan_trethan
May 31, 2004 10:47 am
... that would work, if you need not more current than the 7x19 can supply. You might need a heatsink, they will drop a lot of power. ST...
10821
Stefan Trethan
stefan_trethan
May 31, 2004 10:45 am
On Mon, 31 May 2004 10:35:57 -0000, xaviar_onasis <marplots@...> ... Yes, compare the size to known resistors. A more precise resistor will allow lower...
10820
jitveit
May 31, 2004 10:43 am
... single ... then there ... supply must be ... chassis) ... voltage! If you ... Jan: I was thinking about using 7819 and 7919 regulators. thanks for the...
10819
xaviar_onasis
May 31, 2004 10:36 am
I am doing a bit of salvaging. Is there an easy way to tell what wattage rating a particular resistor is?...
10818
Stefan Trethan
stefan_trethan
May 31, 2004 7:04 am
... a 12V bulb on 5V will not blow, not in a 100 years. st...
10817
Anthony Toft
toftat
May 31, 2004 1:06 am
... the 10 Ohm, 10 Watt ones I used where a few bucks (less than 5) from radio shack, didn't even occur to me to use a bulb or otherwise -- Anthony Toft...
10816
rgsparber@...
rgsparber
May 30, 2004 11:52 pm
... Using a light bulb as a load is cheap, readily available, BUT not as reliable as a power resistor. When the bulb blows, the pc supply will no longer have...
10815
Stefan Trethan
stefan_trethan
May 30, 2004 10:47 pm
... agreed. at the point where you want something other than -+5,12V you will be able to build it. ... car light bulb, see the other posts about the pc supply....
10814
Roy J. Tellason
rtellason
May 30, 2004 10:25 pm
... Well, we're all entitled to our opinions... :-) ... You don't need to understand one to build one. That's the point. Do you understand all of the...
10813
Roy J. Tellason
rtellason
May 30, 2004 10:23 pm
... Probably, but watch out that the common point between these two isn't grounded to the case or something of the sort. That will, if you take your most...
10812
Roy J. Tellason
rtellason
May 30, 2004 10:16 pm
... I've built most of the power supplies I have on hand here, not a big deal. One caveat about using an old PC supply -- they will need to see *some* load in...
10811
Stefan Trethan
stefan_trethan
May 30, 2004 10:07 pm
On Sun, 30 May 2004 18:10:19 -0400, Roy J. Tellason ... I don't think so. A crystal radio is much harder to understand i think (i never built one). You need to...
