Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Resources on how to replicate a small 4 digit display to a Large digit display. Problem I foresee is that the small display and large display will use different voltages, and the existing chip wont handle the load. Do I build an array of transistors to switch each segment of the large display...
Re: Beacon / RF question
Thanks for the reply.
I think that the system would be used as an addition to the safety procedures already in place. The what ifs are endless. False positive is the worst thing that can happen. If the alarm goes off without there actually being a car in distress. the...
Re: Beacon / RF question
Yes we are looking for something like the Sentinel used in Dakar (this is how it came up actually). We cant get in touch with them so far.
All the bells and whistles are available from companies like **broken link removed** but the problem is the price. What we need is...
Re: Beacon / RF question
No problem, we would like to find a cost effective solution to a safety concern for Rally racing. We want to have a beacon transmit a signal if the car is stopped on the stage, crashed or some other danger. The occupants can turn the beacon on, and this will send out...
Hello all. An interesting "problem" came up and I thought it would be interesting to explore.
What I am looking for is a unit/circuit that will transmit a signal (at least 200m and not line of sight). Also a receiver that detects the signal and will sound an alarm.
In effect I am looking to...
I have a little project that I am working with that is beating me at the moment and I thought an audio transformer could help me but alas no.
From what I understand (now) is that any short circuit on the secondary side of a transformer, will be a short circuit on the primary due to induced flux...
For the life of me I cannot get a simple OpAmp circuit to work. To be honest I am trying to learn the analog side of things and this one is killing me.
I have a pile of OpAmps on my bench: KA741, MC1458N, LM307N, LF351N and a few more but you get the point.
SO what I have is a simple audio...
I have a project that's killing me. I have a microphone that I MUST completely isolate from the amplifier its sending a signal to.
I have a speaker and mic that I cannot separate the Neg (-) of the Mic and Speaker. If I make up a powered circuit to power the FET of the electret mic life is good...
Looking for source to buy some dynamic mics. All I find on Mouser and the like are Electret mics. I am not looking for a stage mic, just the component. What am I doing wrong in my search?
Thanks Mik. I wish I could break the wiring out and use a proper 4 wire setup. But alas I cant. What I was hoping for is to make an adapter to plug the helmets already wired 3-wire setup into. Then plug the adapter into the amp breaking it out to the proper 4 wire setup and enabling the use of...
Okay I had some time in the shop tonight to break this wiring down. The WHOLE story. This circuit is part of an intercom for rally racing (I have a similar post about this sort of thing). Each of us in the car have a mic and headset in our helmets. Both of us plug into an amp that enables us to...
Well that did not work... BAD feedback with and without the battery installed. Will have to re-think this one.
Any thoughts on how to use a Electrec mic on a system designed to use a Dynamic Mic?
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
