2SK datasheet, 2SK circuit, 2SK data sheet: TOSHIBA – N CHANNEL MOS TYPE (HIGH POWER AMPLIFIER APPLICATIONS), alldatasheet. 2SK, datasheet for 2SK – N CHANNEL MOS TYPE (HIGH POWER AMPLIFIER APPLICATIONS) provided by Toshiba Semiconductor. 2SK pdf . Toshiba 2SK 17 available from 2 distributors. Explore Discrete Semiconductors on Octopart: the fastest source for datasheets, pricing, specs and .
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I rebuild the whole thing and this time I used around 50ma per pair, i. FETs are unipolar transistors as they involve single-carrier-type operation.
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Thanks for the advice – J. THese are my datasheeet I think the problem you have is thermal runaway as that the S only have a negative voltage quoeficient at 3 Amp. I suppose you have no oscilloscope. I have built similar power amps with the same circuit with SJ but with satisfactory results.
Is this the case?
I set the bias current to 65 milliamp per pair. Thanks for the advice posted by J. And also if current differ from high to low to high.
So you need a temperature compensation for the Sj,usualy a transistor multiplifier BE mouted in thermal contact with the output devices. Farnell Electronics is a distributor. Santos on January 06, dataheet 2sk15299 fact that resistor together with the input capacitance messured in pF, see datasheet, forms a RC-lowpassfilter, that makes the fast MOSFETs somewhat slower, that gives a lower Open Loop Bandwidth, and so it can make the amp more stable!
Also the quality of these BUZ?
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Most other devices for example HexFETs don’t have a zero tempco until the drain current reaches the several amps region – so you’d need a bias control circuit! I guess I will not use SJ for this circult. IRF datasheet groman Two Words – djk Jorge Santos Thermal Runaway – djk Drain – Source Voltage Vdss. The bias currents you were using should be fine unless you have a way too high voltage across the transistors. There is a Zobel already. Gate threshold voltage Vgs th. Have you put a voltmeter acros the bias network or from gate of J to gate of K and tracked that voltage with time?
Does anyone has such experience with SJ and SK What about the quality of these BUZ? Phil Burning is typical unstable Circuit. They are very difficult to stabilize without some sort of bias servo.
Check the devices data sheets.
The MOSFET is by far the most common transistor in both digital and analog circuits, though the bipolar junction transistor was at one time much more common. See my other reply!
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Amp fixing groman Thanks for the advice – akltam Alan djk is right! Audio Asylum Thread Printer Get a view of an entire thread on one page. NT – akltam Groman had a real good point about the bias voltage. It shares with the IGBT an isolated gate that makes it easy to drive.