Dean,
I learned a long time ago that one sign of maturity is when you learn that ..
"Just because you can do it is not always sufficient reason to do it".
Len
Search found 1499 matches
- Wed Sep 17, 2008 5:09 pm
- Forum: General Discussion
- Topic: Stringed Instrument Tuner, Ideas?
- Replies: 30
- Views: 15408
- Wed Sep 17, 2008 5:03 pm
- Forum: General Discussion
- Topic: Ultrasonics
- Replies: 23
- Views: 8471
- Wed Sep 17, 2008 2:22 am
- Forum: General Discussion
- Topic: Ultrasonics
- Replies: 23
- Views: 8471
John, It would probably be impossible to DIY and beat this deal from Harbor Freight. I have had this one for over a year and am pleased with it's operation. They also have smaller other models. Here'a a neat tip. Almost all ultrasonic cleaners have a dead node somplace in the tank. To find it, or ju...
- Fri Sep 12, 2008 3:52 pm
- Forum: General Discussion
- Topic: My first electronics project
- Replies: 18
- Views: 8482
Al, These were rotary stepper switches. which were solenoid driven switches. Think of a 10 to maybe 40 position 2 to 10 pole rotary switch that moved to the next step with a pulse to a solenoid. 6 pulses, 6 steps. They could be arranged to self step by using interrupter contacts on the solenoid arma...
- Thu Sep 11, 2008 7:17 pm
- Forum: General Discussion
- Topic: My first electronics project
- Replies: 18
- Views: 8482
Greetings... Aside from oatmeal box radios, I remember building an 'adding machine' using a ton of salvaged telephone company stepper switches and a half ton of NE-2's . I body filled the original unneeded holes on a used commercial slope top cabinet and repainted it. A rotary dial was the input dev...
- Tue Sep 09, 2008 3:55 am
- Forum: General Discussion
- Topic: More VCR Problems
- Replies: 26
- Views: 8023
- Tue Sep 09, 2008 3:49 am
- Forum: General Discussion
- Topic: 7555 antivox timer ?
- Replies: 9
- Views: 3898
Externet Another idea! Use an SCR or triac in series with the telco line sieze path. I've used them in a opto-islolator package for isolation. Be sure the rating of the device is several hundered volts so it doesn't break over with the typical 90 VAC ringing voltage and spikes. The device can be tri...
- Tue Sep 09, 2008 3:34 am
- Forum: General Discussion
- Topic: 7555 antivox timer ?
- Replies: 9
- Views: 3898
Externet, Instead of using a 'lost audio' scheme to disconnect the telephone, why not use the CPC (Calling Party Control) signal generally available from the telco? This used to be a battery reversal or a momentary loss of DC on the telco line, or both. Today battery reversals are usually not used b...
- Tue Sep 09, 2008 3:18 am
- Forum: General Discussion
- Topic: Marking Threads As Solved
- Replies: 10
- Views: 4794
Another Thought! There could be some 'aging' reference to the original, or last post. Maybe a flag to show that the thread's last post was over a certain time period, or the thread could be moved to another area. Some other forums have both 'Active' and 'Archive' sections. A member recently added a ...
- Mon Sep 08, 2008 2:30 am
- Forum: General Discussion
- Topic: Storing Epoxy in the Refrigerator
- Replies: 7
- Views: 3460
- Mon Aug 25, 2008 7:34 pm
- Forum: Up For Grabs
- Topic: Commercial Intercom Components---Long Gone!
- Replies: 10
- Views: 19831
Still Have Some!
Come on guys! There must be sombody out there that can use this 'retired' gear. Put together a system, make some $ repairing one, donate it to a school and take the write off, or whatever you want. I'll take a trade, cash or maybe even a good original hard luck story. I'll even answer questions abou...
- Fri Aug 15, 2008 7:58 am
- Forum: General Discussion
- Topic: [OT] Retail rounding cents up or down ???
- Replies: 14
- Views: 6276
As an aside.. When I was stationed in the UK a life time ago, the US penny was not allowed to be used. They were collected and redeemed in silver upon arrival because they were the same size as a UK coin, the sixpence I believe, and worked in the cigarette vending machines. All the US sales on base ...
- Tue Aug 05, 2008 7:53 pm
- Forum: General Discussion
- Topic: Interference Problem
- Replies: 9
- Views: 4361
There are two systems: System #1: Worst offender All the input cabling is located inside of a custom built 20' wide curved boardroom desk that seats the board. The 8 mic jacks ate on a filler panel that is inside the desk. The mixer and amps at at the end where the recording secretary is seated. Cab...
- Mon Aug 04, 2008 8:56 pm
- Forum: General Discussion
- Topic: looking for another part...
- Replies: 4
- Views: 2441
- Mon Aug 04, 2008 8:50 pm
- Forum: General Discussion
- Topic: Interference Problem
- Replies: 9
- Views: 4361
Dave, Yes the buzzing has some of the same characteristics as your sound bytes. I suspected cell phones from the beginning but the only way 'bagging' would ever work is to have a hypnotist or a guy with a gun, front and center. The audience is political wigs and news media covering the meeeting with...