UC3844 PDF

Quote from: technix on May 01, , pm What topology to use then? Maybe I can build both the primary tracking regulator TL seem to be a better all-in-one chip for me, since it can support dual rail using two optocouplers two error amps and wildly varying output multiple topologies, both switchers will see that, either from the user setting a voltage or plugging in an iPad Quote from: T3sl4co1l on May 01, , pm Quote I was thinking about splitting grounds so I can have the analog and digital sections entirely separated, to the point of being able to move the analog and power sections, with their respective isolated controls, off to daughterboards so I can construct a simple plug-and-play multi-channel system. Main rectifier, PFC and digital section on the backplane, output strips on the daughterboards.

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Quote from: technix on May 01, , pm What topology to use then? Maybe I can build both the primary tracking regulator TL seem to be a better all-in-one chip for me, since it can support dual rail using two optocouplers two error amps and wildly varying output multiple topologies, both switchers will see that, either from the user setting a voltage or plugging in an iPad Quote from: T3sl4co1l on May 01, , pm Quote I was thinking about splitting grounds so I can have the analog and digital sections entirely separated, to the point of being able to move the analog and power sections, with their respective isolated controls, off to daughterboards so I can construct a simple plug-and-play multi-channel system.

Main rectifier, PFC and digital section on the backplane, output strips on the daughterboards. Or if it does, perhaps each channel would need isolation? Which would perhaps be best handled as a per-module cost i.

And if you only have digital and analog circuits, with common grounds between each domain, but isolation between the two Which is a bad idea, a fantasy often promulgated by unscrupulous appnote writers. Keeping everything on common grounds simplifies routing and EMI. You may end up with some ground loops that would otherwise be prevented with isolation , but these are usually a matter of routing signals appropriately. That is, the signal might be driven by an op-amp, so it will only be accurate for some 10s mA of load, and the minimum load presented by all modules in parallel should be some kohms of resistance, plus whatever load capacitance is required to filter to that bandwidth.

If the system bandwidth is modest, and current sinking is available from the amplifiers, you can simply wire audio to the VREF input and you have yourself a big powerful laboratory amplifier, too! Or just filter it and allow the modules to handle PFC themselves?

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uc3842的主要功能

Причина довольна проста - не каждый хранит сварочный аппарат в отапливаемом помещении и возможна ситуация, когда нужно что то подварить в межсезонье, а сварочник или не включается или банально взрывается. Проскочив по Али я пришел к выводу, что проблема вполне решаема. Ну а Вы уж как пожелаете. Теперь можно и о самой микросхеме поговорить, точнее о принципе ее работы.

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