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  1. crutschow

    Series Resistor in Place of Line Distribution Transformer

    It can be. But for the umpteenth time, you will lose most of the power in the resistors. Is that difficult to understand? :rolleyes:
  2. crutschow

    Series Resistor in Place of Line Distribution Transformer

    That calculates to only 30W into a 166 ohm impedance. The spec says the output impedance is 83 ohms for the 60W amp at 70V out. No, that will not be a valid test, since the resistor will give a much different line current for the same speaker power, than the transformer. You need to use the...
  3. crutschow

    Air conditioner remote control

    Given the proprietary nature of such a remote, I think it would be difficult to duplicate its signals. One possibility is to use WIFI controlled relays wired across the remote buttons to simulate the button presses.
  4. crutschow

    restoring old garage door opener-receiver/transmitter

    Do you have a meter to check the voltage across the relay contacts connected to the opener? It should drop to zero when the relay is activated.
  5. crutschow

    i am Dean Smuth

    If you don't know the answer to that, you've missed out on a lot.:D
  6. crutschow

    Relay Priority

    Will the relays always be energized in sequence (i.e. If U2 is on then so is U1, and if U3 is on, the so are U1 and U2)? If so, the relay connections below should work:
  7. crutschow

    Any one thinking to buy a Mobility Scooter

    Way too many options. That's like asking what's the best automobile to buy. Help us narrow down your requirements.
  8. crutschow

    How to generate about 25kv high high voltage with Back EMF from single coil?

    What load will the 25kV see?
  9. crutschow

    Convert 7 Segment LED Digital Clock to 3 Segment Representing Seconds, Minutes and Hours

    You could use multiplexers to sequentially connect one IR LED driver to the 8-segment LEDs, one segment at a time. That would require 6 digits x 8 segments = 48 mux switches. At the receiver end you would need 2 x 8 = 16 switches, plus logic to decode the signal. Of course you would have to...
  10. crutschow

    How about hot steam for unsoldering (more effective than heat gun?)

    Doubt that will heat the joint sufficiently to melt solder, and some of the steam will condense so you will end up with a wet board, likely not desirable.
  11. crutschow

    Query about the recharging of a lead acid battery

    Naw, that would be piling on. Just callin' it as I see it.
  12. crutschow

    Query about the recharging of a lead acid battery

    You are probably correct. :eek:
  13. crutschow

    Which resistors for crossover circuit ?

    Measure the physical size of ones that have failed and determine the wattage of similar sized resistors from common resistor data. Then pick ones with a least twice that wattage rating.
  14. crutschow

    Query about the recharging of a lead acid battery

    I suggest you don't reply on this forum while you are on whatever you are on. :rolleyes:
  15. crutschow

    Query about the recharging of a lead acid battery

    You could use the 5V supply but, at a minimum, you would need to add a small series resistor (likely about 10 ohms) to limit the charge current to 100mA and charge for about 10 hours. Connect a multimeter in series to monitor the current.
  16. crutschow

    revolving chandelier with a way to plug in led strips

    How can it be wrong? What difference does it make which way it revolves?
  17. crutschow

    Old dvd home theatre SONY sr4w , optical input is Dolby digital 5.1?

    The specs say it can decode Dolbly Prologic II, which should give you 5.1 surround sound. You would need an optical sound source to check out the system before you buy.
  18. crutschow

    Electrical circuit Analysis

    So are you happy with those results?
  19. crutschow

    Electrical circuit Analysis

    But that's a very tiny current, likely to the limits of the computing precision in the simulator. No matter how many digits the current is computed too, it may never be exactly zero.
  20. crutschow

    Electrical circuit Analysis

    Yes, you can do transient analysis with constant voltage supplies. Why would you expect other than 0 amps? Yes, that value is approaching the precision of the Spice calculations. What don't you understand? With zero voltage across the components (the same signal from both sources) you get...
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