These new Brazilian and Chinese clones are using some odd numbered resistors that even tho obtainable, but can they be replaced by the nearest logical types along the mosfet gates on the audio output gate drive circuit without any form of problems?
For example 13ohms can I safely replace 12ohms (replace all for each mosfet) and for Taramps 3.3ohms can I use a 4.7ohms?
For example 13ohms can I safely replace 12ohms (replace all for each mosfet) and for Taramps 3.3ohms can I use a 4.7ohms?
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Hi,
in my opinion, these values are more than reasonable, and are perfectly available on the market, yes, maybe they are a little over the standard values (for example 13 ohm instead of 10ohm) that you are used to finding.
Usually these are "finesses" that make the mosfet's switching on as stable as possible (the 4148 diode in parallel with the resistor takes care of switching off) but I think it shouldn't be a big problem, in fact, these amplifiers are already full of problems and instability when they leave the factory.In any case, 13ohm, as well as 3.3ohm are very easy to find values.
in my opinion, these values are more than reasonable, and are perfectly available on the market, yes, maybe they are a little over the standard values (for example 13 ohm instead of 10ohm) that you are used to finding.
Usually these are "finesses" that make the mosfet's switching on as stable as possible (the 4148 diode in parallel with the resistor takes care of switching off) but I think it shouldn't be a big problem, in fact, these amplifiers are already full of problems and instability when they leave the factory.In any case, 13ohm, as well as 3.3ohm are very easy to find values.
I'd use the originals, especially on marginal designs. Going high may decrease the control of the gate signal Going lower will stress the drive circuit more.