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  • Home Made Ultrasonic Cleaning Tank

    Two years late, but maybe for anyone else who might be wondering the same thing. According to one industry expert, energy absorbed by tank walls has a greater effect in the smaller tank sizes, for example: 5-gallon tank= 250 watts RMS, 80-gallons= 2kW. I would recommend looking at commercially made tanks with the size you need, then finding out what they used for system wattage. But you will need to be careful if the particular manufacturer is using peak-power, or average power. The ultrasonic signal is an alternating waveform and in order to compare power between any two systems, the average or RMS power should be used.Size of cavitation bubble determines the cleaning effectiveness. The larger the bubble is, the greater it's impact force when it collapses. Signal frequency relates to h...see more »Two years late, but maybe for anyone else who might be wondering the same thing. According to one industry expert, energy absorbed by tank walls has a greater effect in the smaller tank sizes, for example: 5-gallon tank= 250 watts RMS, 80-gallons= 2kW. I would recommend looking at commercially made tanks with the size you need, then finding out what they used for system wattage. But you will need to be careful if the particular manufacturer is using peak-power, or average power. The ultrasonic signal is an alternating waveform and in order to compare power between any two systems, the average or RMS power should be used.Size of cavitation bubble determines the cleaning effectiveness. The larger the bubble is, the greater it's impact force when it collapses. Signal frequency relates to how far a molecule of cleaning solution is moved before the signal half-cycle allows it to move back, thus becoming a 'collapsed cavitation bubble'. System wattage relates to how well the cleaning solution is loaded in order to perform work, but it is when there is an absence of input energy when the actual cleaning action takes place. ie, on every half-cycle when the power signal hits zero amplitude. Generators operating at 25kHz work well for removing heavy paint layers from rugged parts like cast-iron. 37kHz is a good general-purpose frequency. 45kHz works better for more delicate parts, polished surfaces and soft base materials like what is found in carburetors

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  • Crystal cMoy Free Form Headphone Amplifier

    I think it might be better, now that I thought about it some more, to either use a SSR instead of a mechanical relay to cut down on the time it takes to shut down power, or to wire a mechanical relay with a blocking diode so it energizes with correct polarity and block power to the amp until the relay has time to trip

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  • Crystal cMoy Free Form Headphone Amplifier

    In series with that back-biased diode, add the coil of a relay. The coil will limit the amount of current passing through the diode. Then, have the relay break the power connection to the rest of the circuit and maybe light-up a red LED to show the fault condition.

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