Help With LT1339CNPBF Test Circuit

[shaunAES]

Hi

I need help with a Linear Technology LT1339CNPBF test circuit. I have built the circuit but used similar N Channel MOSFETS to the ones on the test circuit because the mosfets on the test circuit are obsolete. My circuit does not switch the MOSFETS ON AND OFF. Can you please help me get the circuit working. I used the IRFIZ34G MOSFET instead of the Si7884DP MOSFET that was supposed to be used in the circuit. Attached is the circuit diagram.

Thanks.

 

[shrtrnd]

I'm lazy when I can be.
Consider contacting Linear Technology, and ask them for a recommended equivalent to your obsolete semiconductor.
(Or their latest test circuit, for the LT1339CNPBF)