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Need help with an Ultrasonic Cleaner - Not working
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<blockquote data-quote="mecheng46" data-source="post: 512700" data-attributes="member: 32476"><p>Today i had a conversation with a guy who knows a thing or two about these ultrasonic cleaners and circuits. Apparently due to the minor differences in glue/sensors/cable length and whatever else the system needs fine tuning to give the correct current to the 4 sensors. This guy reckons that there is not enough current reaching the sensors and thus are not giving the right frequency. He suggested to measure the current from the main coil and adjust it accordingly. Some PCB's have a trimmer for this purpose but he is not sure if mine has one or not as i did not have a good picture of my PCB. If this PCB don't have a trimmer switch then i will have to add insulation paper on the main coil to achieve the relevant current value.</p><p></p><p>There are two trimmers/potensiometers adjacent to the big coil on the PCB but i don't want to mess with them before getting some advice please.</p><p></p><p>Anybody who can comment on this? Does this process sound familiar to anyone?</p><p></p><p><a href="https://ibb.co/Dr14ZVS" target="_blank">Picture 3</a></p><p></p><p><a href="https://ibb.co/JrZ1WC0" target="_blank">Picture 4</a></p><p></p><p><span style="color: rgb(147, 101, 184)">If you read through this whole thread you will realise that 99.9% of "Plug in devices" (As opposed to the wiring etc for the socket they plug into) require specialist knowledge, something we do not have. By all means ask, but I doubt you will get the reply you seek.</span></p></blockquote><p></p>
[QUOTE="mecheng46, post: 512700, member: 32476"] Today i had a conversation with a guy who knows a thing or two about these ultrasonic cleaners and circuits. Apparently due to the minor differences in glue/sensors/cable length and whatever else the system needs fine tuning to give the correct current to the 4 sensors. This guy reckons that there is not enough current reaching the sensors and thus are not giving the right frequency. He suggested to measure the current from the main coil and adjust it accordingly. Some PCB's have a trimmer for this purpose but he is not sure if mine has one or not as i did not have a good picture of my PCB. If this PCB don't have a trimmer switch then i will have to add insulation paper on the main coil to achieve the relevant current value. There are two trimmers/potensiometers adjacent to the big coil on the PCB but i don't want to mess with them before getting some advice please. Anybody who can comment on this? Does this process sound familiar to anyone? [URL='https://ibb.co/Dr14ZVS']Picture 3[/URL] [URL='https://ibb.co/JrZ1WC0']Picture 4[/URL] [COLOR=rgb(147, 101, 184)]If you read through this whole thread you will realise that 99.9% of "Plug in devices" (As opposed to the wiring etc for the socket they plug into) require specialist knowledge, something we do not have. By all means ask, but I doubt you will get the reply you seek.[/COLOR] [/QUOTE]
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Need help with an Ultrasonic Cleaner - Not working
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