HI all,
can I subsitute tr 2SA1302 + 2SC 3281 with 2SA1493 + 2SC5200
what is the substitute for MJE 15030 and 15031
Many thanks for the reply.
sorry my bad.... the tr should be 2sa1943.
how bout 2sc2922 and 2 sa1216 or its bigger brother (300w device)
can it replace sa1302 and sc3281?
please enlightened me on the secret of tr substitution?
what should I look carefully...
please bear with me....
I'm a diy novice and have about zero know how in circuit designing or trouble shooting
miracoulusly though I've built JLH 15W class A (still some hum issue and oscilation from the psu) and a kit power amp using mj 15003 and mj15004
another question
my next project will be the ESP 60 w ( http://www.sound.au.com/project3a.htm )
if I want to paralleling the o/p tr
should i add the emitter resistor to supply voltage or collector resistor to output ?
Thanks alot for your kind attention
[Edited by dexter on 04-16-2001 at 06:19 PM]
can I subsitute tr 2SA1302 + 2SC 3281 with 2SA1493 + 2SC5200
what is the substitute for MJE 15030 and 15031
Many thanks for the reply.
sorry my bad.... the tr should be 2sa1943.
how bout 2sc2922 and 2 sa1216 or its bigger brother (300w device)
can it replace sa1302 and sc3281?
please enlightened me on the secret of tr substitution?
what should I look carefully...
please bear with me....
I'm a diy novice and have about zero know how in circuit designing or trouble shooting
miracoulusly though I've built JLH 15W class A (still some hum issue and oscilation from the psu) and a kit power amp using mj 15003 and mj15004
another question
my next project will be the ESP 60 w ( http://www.sound.au.com/project3a.htm )
if I want to paralleling the o/p tr
should i add the emitter resistor to supply voltage or collector resistor to output ?
Thanks alot for your kind attention
[Edited by dexter on 04-16-2001 at 06:19 PM]
dexter,
yes, but the case is different and the complementary for the 2sa1493 is the 2sc3857 not the 2sc5200.
I don't know about equivalents for the MJE's.
All the transistors you are looking for are available in the US.
yes, but the case is different and the complementary for the 2sa1493 is the 2sc3857 not the 2sc5200.
I don't know about equivalents for the MJE's.
All the transistors you are looking for are available in the US.
There appears to be some finger error here. I assume that the 2SC1493 in the original query should have read 2SC1943. The Toshiba manual specifically quotes the 2SA1943/2SC5200 as direct replacements for the 2SA1302/2SC3281 (the case size is the same - TO3-P(L)).
Geoff
Geoff
The MJE15030/MJE15031 are high power/high frequency driver transistors. Depending upon the application, there are a number of substitutes. Assuming that you are looking for drivers for the 2SA1943/2SC5200 then suitable alternatives would be Toshiba's own drivers, either 2SA1837/2SC4793 or 2SA1930/2SC5171. These have the same case (TO-220) as the MJE devices. The 2SA1930/2SC5171 have a higher current rating (2A) than the 2SA1837/2SC4793 (1A) and are nearer to the rating of the MJE15030/MJE15031 (4A).
Geoff
Geoff
This thread seems to be the appropriate place were to post this link, that maybe is old news:
http://www.pitt.edu/~gszekere/trans.txt
It appears to conver all the basics, too bad there is no Hfe.
http://www.pitt.edu/~gszekere/trans.txt
It appears to conver all the basics, too bad there is no Hfe.
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