Continue to Site

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.

Register Log in
  • 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 CoTang

  1. C

    Battery Configuration

    Hi, Attached is two parallel battery circuit with diodes. My question is, is there a difference in operation? or are they theoretically the same? Can one cause issues given that all the components are functioning properly. Thanks.
  2. C

    PnP Transitor Base Voltage Value?

    Hello, Given this circuit that is attached, I'm assume with the voltage divider law, the votlage to the base of the transistor should be 2V, but when simulating it, it shows 2.4V. What causing the value to be non-ideal? Thanks.
  3. C

    FPGA Power vs uC

    Well first off, I didn't build the original device. I'm researching ways to improve it better. When I heard about that I also said "what the hell?". Anyways, thanks for the input.
  4. C

    FPGA Power vs uC

    hmmm that link explains a lot! Since the current situation is all digital logic except for the sensors to a/d (which is triggered and converted to digital) an FPGA looks like an idea candidate due to the parallel feature although the uC has some too, the FPGA has more I/O for that.... Any site...
  5. C

    FPGA Power vs uC

    I apologize if my question doesn't make much sense. I'm just started looking into other possible devices to reduce the uC that is used. I'll try to explain the current situation. I have 10 sensors that is connected to 10 A/D and each one is tied to an atmel 8bit uC that samples at say 1/s...
  6. C

    FPGA Power vs uC

    Haha, sorry thats an Arm I believe....LPC2214. Damn. Let me try again. If there is 10 atmel 8 bit (commonly used uc) what can I use to replace those 10 that can do the same thing but has more power.
  7. C

    FPGA Power vs uC

    ..........
  8. C

    Electronic Tests

    Thanks kchriste, I'm actually located east of you in the very nice city of Calgary, Alberta. And as for moving....well... no can do. thanks Gayan Soyza, thats the problem, I perfer paper because its easier. When asked a question verbally, I tend to get nervous and forget things....
  9. C

    Electronic Tests

    Hello, I'm at the start of a new job again (Layoffs....) anyways, I'm out looking for another job and had several pre-screening interviews. Majority of the interviews I had in the past had giving me an electronic test (theory and circuit analysis) but this time its been almost 3 years since I...
  10. C

    Transistor and a PIC

    I hate you :) Beside, no answer is ever pointless, its just how people see it to be! :p Oh well, at least I got 90% of the question answered. I guess it'll have to do.
  11. C

    Transistor and a PIC

    It does matter to me. I pretty much understand that its shorting out due to the previous posting, but it still doesn't make sense that if it is shorting out casuing the pin to read 0V and the Read-Modify-Write ends up writing zero, why in the world that if I put in delay it actually works. (Well...
  12. C

    Transistor and a PIC

    I forgot to put it in or might have missed it, you know how the bread board can get cluttered up like that. But you are right it is suppose to be in there, but I would like to know why it doesn't work. I see it as a learning experience.
  13. C

    Transistor and a PIC

    That explains it, but still why does it work with a delay in it? Say I go high Portb.0 (Which is activating the transistor) delayms 1000 (add a delay of 1 sec) the sucker actually turns on then off. And yes the voltage I measured was 0V on the pin.
  14. C

    Transistor and a PIC

    Hiya! I had great help on here before and I'm needing it again. I was playing around with a 16f84a interfacing the portb.0 bit to a 2n3904 npn transistor that activates a 12vdc 270ohm relay(with a diode of course). Now when I omitted the Rb (resistor from pic pin to base of transistor) it...
  15. C

    Regulator not regulating

    Hmmm... I always thought that 5V meant max TTL input and with an analog input it can go above 5V like all other A2D I used in the past... honestly, this is my first time using the PIC analog inputs. I decided to use it in a last minute thing after reading your tutorial on Analog inputs and...
See more

Latest threads

New Articles From Microcontroller Tips

Back
Top