Search found 874 matches

by Edd
Mon Aug 11, 2008 5:37 am
Forum: General Discussion
Topic: Need help identifying a semiconductor
Replies: 23
Views: 17365

WELL. . . .BLOW MY MIND. . .DEJA VU. . . . I had composed this on laptop. . . .but did'nt have Internet access. . .nor even viewing capability. . . until just now, BUT, I'm placing it on, in its entirity, as there were some topics yet uncovered. 73's de Edd Thanx for drawing up the schema. . .as all...
by Edd
Sat Aug 02, 2008 11:16 am
Forum: General Discussion
Topic: July 1976 Radio Electronics?
Replies: 4
Views: 3962

<br><br> Hows about the particular article(s) of interest in that July 1976 R E issue I am guessing that the very most likely, would be an article on a brain Alpha monitor, which displays output as a variable pattern (rectangle)on a TV screen as a graphic. (You probably might not be able to get the ...
by Edd
Sat May 31, 2008 11:05 am
Forum: General Discussion
Topic: Tektronix 466 green screen problem
Replies: 6
Views: 4061

I didn't catch anyone additionally tying into the situation of your unit ALSO being a STORAGE unit with the addition of also having a delayed hoz time base function. BUT , with your having mentioned that you can at least get repetitive traces, therefore the basic time base and triggering aspects see...
by Edd
Tue Oct 30, 2007 10:58 am
Forum: General Discussion
Topic: Any jewelers?
Replies: 3
Views: 2461

. I say....now...... that’s one novel question. Haven't seen same, but have worked with a gemologist’s diamond authentication instrument. Looking at the current info available, they just might be possibly using a variant or combo of the following two techniques below: http://www.patentstorm.us/p...
by Edd
Mon Sep 24, 2007 1:24 am
Forum: General Discussion
Topic: Identifying electric motor lead wires
Replies: 6
Views: 6420

. I am in concurrence on info given to date. Particularly, as is relevant to any internal centrifugal starter contacts. In my situation I am using a like HP rated motor but running at twice your op speed on a table saw with a 66 tooth carbide blade to get razor smooth cuts. You didn't specify the ap...
by Edd
Wed Sep 19, 2007 1:04 pm
Forum: General Discussion
Topic: Sanyo color TV is now B&W only
Replies: 9
Views: 5154

. . Weel l l l...in a researching through the mostest Plainest Jane...San...Yoooooo.....and heavy on that Yooooooo...... chassis, of that newer vintage, see if this provided thumbnail of a set is in accordance with the detector/video/audio/sync/blanking/DCrestoration/chroma/chroma demodulation/hoz p...
by Edd
Sat Sep 15, 2007 10:40 am
Forum: General Discussion
Topic: need schematic for whelen aircraft strobes
Replies: 30
Views: 21326

. Pilot to navigator....come in pls: Is it Monday yet ??? and if not, relevant to the ionization lag, before springing for that chip / buying the farm, hows about trying a hefty damper diode across the flash tubes main electrodes. Polarity is anode to ground and cathode to the tube, to see if a quic...
by Edd
Sat Sep 15, 2007 10:13 am
Forum: General Discussion
Topic: Sanyo color TV is now B&W only
Replies: 9
Views: 5154

. All Hail....the mighty Ceasar! With that model number that you gave and with it then replicated in its chassis number, I can assume that you neither retreived that number from the back of the set using a mirror....nor had you experienced an onset of dyslexia. Also with your addee of Phoenix.... &q...
by Edd
Wed Sep 05, 2007 7:18 pm
Forum: General Discussion
Topic: Popular Electronics Magazine
Replies: 19
Views: 13077

. Zap"ster" 101 : I pulled your relevant info and digitized it for you and will tack it on as the tailer to this post such that any others can share it, if also of interest. Before I even had seen any info as to what technique that the the article was utilizing I was about to suggest the f...
by Edd
Wed Sep 05, 2007 11:30 am
Forum: General Discussion
Topic: need schematic for whelen aircraft strobes
Replies: 30
Views: 21326

. HEEEEYYY...Flac Dyer: O.K. after hearing what you have subbed in the way of other known "good" operable parts into the circuitry. Lets enact Basic Failure Analysis 101, and think about the situation from this perspective. From the basic / primary aspects of the units operation, the syste...
by Edd
Wed Aug 22, 2007 6:53 pm
Forum: General Discussion
Topic: need schematic for whelen aircraft strobes
Replies: 30
Views: 21326

. Sounds like quite a bit more of specifics are required....so I'll just initially do an inter fill and hit upon some touch points: This unit is having a really weird problem, originally it had a blown fuse and the power transistor was shorted, I replaced the transistor, and the fuze, That descripti...
by Edd
Mon Aug 20, 2007 3:18 pm
Forum: General Discussion
Topic: Sanyo color TV is now B&W only
Replies: 9
Views: 5154

No time available now...PLUS....also with # no de votre télévision . BUT... basically...the chroma demodulation is occurring at a much earlier staging and is entirely different from the situation of merely driving a particular video amp...albeit... R - B - G with the digitized menu signal that is ...
by Edd
Mon Aug 20, 2007 1:58 pm
Forum: General Discussion
Topic: Voltage Controlled Voltage Amplifier/ Mr. Al
Replies: 29
Views: 12474

Wow....an initial six "proto" boards comitted and already having been carved in stone. Looks like that with your potential required dissipation level using that higher raw DC voltage input, and being the utilization a linear regulator design, that the minimal heatsinking might just be the ...
by Edd
Fri Jul 27, 2007 12:27 pm
Forum: General Discussion
Topic: Again..this danged CD recorder
Replies: 18
Views: 9130

. Heeeyyyyy Mod Rob.....can you hear me now ......CAN YOU HEAR ME NOW ??? (Don't get here much anymore..... since I no longer have to jockey g-kids about.....thus not leaving me with a free 1/2 hr to read the forum each aft.) Seems like on day one, your complaint was the unit not opening or closing ...
by Edd
Mon Jun 04, 2007 6:31 pm
Forum: General Discussion
Topic: Gummy rubber on capstans...
Replies: 15
Views: 7263

Does anyone know what causes rubber to become gummy or dissolve in some parts as rubber feet, capstans in tapedrives/ recorders, 8-tracks cartridges, ...? ALL..... of the above items..... along with belts that also "melt" or loose their instant "springback memory" characteristic...