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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by psecody

  1. psecody

    An odd issue with half wave rectifier.

    Interesting, I hadn't thought of transients from the transformer.... I'll have to look into this and try adding that to the circuit just in case. I don't have detailed specs on the tach generator so there's some guess work going into this. The tach is from the 1940's and I've got the overhaul...
  2. psecody

    An odd issue with half wave rectifier.

    Thank ya'll for the advise. About the ground on the probe, I probably explained that wrong, I was measuring across the resistor, just from the ground bus rather than the lead directly. I finally got it worked out good enough to do what I'm needing it to do. The AC coupling was one part of it for...
  3. psecody

    An odd issue with half wave rectifier.

    So I've got a circuit that I'm working on where I've got a tach generator outputting AC signal (0-~70V) that I'm trying to measure the frequency of using a ATTiny328P. I've gotten the ATTiny programmed and working on the bench testing with a function generator set to square wave with a DC offset...
  4. psecody

    Who's afraid of the PIC32MX695F512H ?

    I have wanted to try them for a while but as long as I'm a broke college student I'm probably not going to venture that way, plus I don't even feel competent enough with the smaller pics to do anything much other than display stuff on LCD's. One day though, one day.
  5. psecody

    EasyPIC4 programmer problem

    Thanks for the FET info I hadn't thought to check that. To be honest I'm not sure how to go about checking that, would I just connect the power and read the voltage on the legs when it programs? I'll also check on the 74HC4053, I haven't looked at the data sheet for that but any tips on...
  6. psecody

    EasyPIC4 programmer problem

    Yeah the jumper is set to the external power source. And the caps are in place and by visually look to be fine but I haven't checked them. The USB thing hasn't worked since the beginning but I have read on their faq or somewhere I can't remember that laptops usually can't put out enough power...
  7. psecody

    EasyPIC4 programmer problem

    Hello, thanks for the reply. When if first got the programmer a couple of years ago I originally started trying to use the USB connection for power but that doesn't work. Mainly the reason it doesn't work I'm using a laptop and it can't power it sufficiently for programming, it just powers...
  8. psecody

    EasyPIC4 programmer problem

    Thanks I appreciate that, thats the part I looked up but wasn't sure if that was for sure thats what it is. I appreciate it. Hmm.. well I'm stumped now...
  9. psecody

    EasyPIC4 programmer problem

    I have only tried two chips at the moment the 8pin 12f615 and the 16f877a which is a 40pin. I have an 18f somewhere thats a 28pin but I don't think it's good anymore I think I messed up one of the pins when I desoldered it out of a project. I also have another 12f615 that I could try I suppose...
  10. psecody

    EasyPIC4 programmer problem

    Well I did consider that because the adjustable wall wart had a polarity switch on it but the programmer says it accepts both ac and dc power and it has a regulator and a rectifier on the board so even if the polarity is backwards it shouldn't matter right? I may be wrong there (probably) but I...
  11. psecody

    EasyPIC4 programmer problem

    Hello everyone, I'm stumped, I finally got to go home over Thanksgiving and picked up my programmer to try some designs out that I came up with. Last night I got it all set up and was going to program a 12f615, for which I wrote a simple flashing LED program to make sure I remembered most of...
  12. psecody

    WHat do I know?

    Well I figured out last year that going to junior college and getting basics for me was a waste. My councillors put me in classes that I didn't need so last year when I finally got to a 4 year college I ended up with about 4 hours transferring and having to start from scratch. I kind of agree...
  13. psecody

    Entrepreneurs and Electrical/Electronics

    No offense to Bill Gates but I read a biography on him at one point in school and was really let down. He doesn't really program or anything technical, his friend did all of that. He didn't actually create DOS, he stumbled into buying it from, if I remember correctly IBM but I'm not 100% on...
  14. psecody

    Entrepreneurs and Electrical/Electronics

    sorry if this is off topic but I figured it would be best asked in this thread. I'm having to take all these math and physics classes for EE and I'm not really sure why. In my whole 10 years of working with electronics I have never seen an example where I would need really anymore knowledge than...
  15. psecody

    Guitar Amp Project

    Thanks I appreciate you defending my stance on the sound difference. As far as the power rating thing goes I'm not hard set on it having to produce 100W thats more of a mines bigger thing but the comment I made about tube amps being louder is one thing I've experienced over and over be it in a...
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