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  1. CDRIVE

    Changeover Switch Relay?

    I suspect that you're still not giving us a full description of your circuit and mechanism. I say this because you say it has limit switches. A few things to note about limit switches: (1) They're typically low demand micro-switches. (2) They typically control the coil or control circuit of SS...
  2. CDRIVE

    Changeover Switch Relay?

    There probably more ways to do that then I care to count. They would all be solid state though. The simplest way would be what AK posted and is being discussed. Chris
  3. CDRIVE

    Changeover Switch Relay?

    Your requirements would have been made much clearer if you had stated this in post 1. :rolleyes: Chris
  4. CDRIVE

    Changeover Switch Relay?

    Perhaps I'm misreading your requirements and what AK posted is what you need. In the event that I'm not misunderstanding you I think a SPDT relay is what you need. Chris
  5. CDRIVE

    Changeover Switch Relay?

    Does this mean that your circuit currently incorporates a timer that's turning a single load (motor) on and off? Chris
  6. CDRIVE

    Changeover Switch Relay?

    Hello James and a big welcome to EP, where everyone is helpful and friendly. That said I'm confused as hell. You're correct.. I think this should be simple but your post has no commas, periods, spaces or whatever. I'm confused because I can't separate the segments of your sentence. Give it...
  7. CDRIVE

    Mechanical Counter - Debounce

    Ha! You guys can create a new forum section called the "Penalty Box". Then with a little "Auto-Scan" software magic the software will seek out duplicate topics and lock them in the penalty box for a week. Like serving after school detention! :p Chris
  8. CDRIVE

    2-stage Class A Amplifier: Gains(voltage and power)

    OK, you're using spice software. We can work with that. There are a number of issues with your component values but we can't correct them for you. We can steer you in the direction of solution though. The first thing you need to do is connect a Vcc source. Then have to recalculate your resistor...
  9. CDRIVE

    2-stage Class A Amplifier: Gains(voltage and power)

    Hard to say without some info. If this is your schematic there's nothing wrong with the physical design but the component values can be all wrong. Please fill in the component values so we'll know. Are you monitoring the output on a scope? Chris
  10. CDRIVE

    2-stage Class A Amplifier: Gains(voltage and power)

    Sir Martin :p has given you good advice but I'm curious.. You didn't state what your input source or output load will be. Did your instructor specify these? Chris
  11. CDRIVE

    208/240V Transformer

    Members that love to read mea-culpa's can go Here where I lay my neck bare for the axe! Chris
  12. CDRIVE

    DC motor undervoltage (continued)

    OK, it's mea culpa time. In the thread that spawned this topic I made the bold statement that DC brushed motors are predominantly resitive but my tests prove otherwise. I was too damn lazy to dig out a small motor and do bench tests for proof, so I attempted to spice it. Tina is my spice of...
  13. CDRIVE

    DC motor undervoltage (continued)

    I'm not worth a crap in the mornings so I'm just lurking for now. Thus far I don't see anything arguable but after reading some of what I posted in the other thread I fully expect rebuttals. Some of the rebuttals will probably be posted by myself! :) Chris
  14. CDRIVE

    208/240V Transformer

    John, go ahead and start the topic. I think it will generate much banter by more than just the two of us. Right or wrong I'm lining up my arguments as I type this. Put it in the Electronics Chat section.;) Chris
  15. CDRIVE

    208/240V Transformer

    Van, I wouldn't hang an MOV across an un-fused circuit. Your mains breaker doesn't count. Also, be aware that when you mess with the Mains your putting yourself in a precarious legal position. Insurance companies will deny an electrical fire claim in heartbeat if they get wind that "Unlicensed"...
  16. CDRIVE

    208/240V Transformer

    When I made my last post I wasn't quite sure why you thought I said that there are non inductive motors because I never said that. That said it should be pointed out that a brushed DC motor is predominantly a resistive load. The resistive elements are far greater than the reactive byproducts...
  17. CDRIVE

    208/240V Transformer

    I wasn't implying that there are but then I gave it more thought and found this. :p Chris
  18. CDRIVE

    208/240V Transformer

    For this to be true we would have to know what the load or loads are. It certainly would be true for some motors, especially if stalled but the opposite would be true for most purely resistive loads. Chris
  19. CDRIVE

    powered computer speaker

    I really didn't understand that. I mean .. like I stared at it for a few minutes struggling to figure out what it meant. Then it dawned on me that this is what my wife says I don't know how to do. I'm glad I never learned that science. :) Chris
  20. CDRIVE

    cracked flyback ferrite

    I don't know if I'm giving good or bad advice but I like epoxy hands down over super glue. Some of the best epoxies on the market are made by JB Weld. Many of JB Weld's products contain metallic binders though. Chris
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