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Joined 2002
i am building a aleph p1.7 pre amp i can get all the parts but the ztx-550 is there a complemantary part to use i think that i saw some where you can use a irf610 is this true..
can any one help please..
Jason
can any one help please..
Jason
ZTX 550 in current sources.
It is not mandatory that you use these exact transistors for the circuit. If you can find P and N types with hfe between 100 and 200 you should be in the ballpark. In some of Mr. Pass' older designs, you can see where he used MPSA18's for the same purpose.
By the way, Digikey has both the 550 and the 450 by the thousands. You can get them as singles for around $0.50 each. You can still get the MPSA18's from Digikey, and they are even cheaper than the Zetex components.
It is not mandatory that you use these exact transistors for the circuit. If you can find P and N types with hfe between 100 and 200 you should be in the ballpark. In some of Mr. Pass' older designs, you can see where he used MPSA18's for the same purpose.
By the way, Digikey has both the 550 and the 450 by the thousands. You can get them as singles for around $0.50 each. You can still get the MPSA18's from Digikey, and they are even cheaper than the Zetex components.
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