Comments on: Guitar pre amp based FET https://amplifiercircuit.net/guitar-pre-amp-based-fet.html Amplifier Project Schematic Diagram Sun, 25 Oct 2020 04:30:29 +0000 hourly 1 By: Charles https://amplifiercircuit.net/guitar-pre-amp-based-fet.html#comment-41230 Sun, 25 Oct 2020 04:30:29 +0000 http://amplifiercircuit.net/?p=565#comment-41230 What do you mean, with two 1M resistors on the bias circuit, you get 500 ohms on the input. Wouldn’t the 1M resistors on R1 and R2, mean that the input impedance is R1+R2 = 500,000 ohms?

]]> By: Amplifier Circuit https://amplifiercircuit.net/guitar-pre-amp-based-fet.html#comment-4496 Sun, 29 Jan 2012 21:47:58 +0000 http://amplifiercircuit.net/?p=565#comment-4496 In reply to jahir uddin.

I don,t know exactly the type of MOSFETs sold in your local market. But as I know BS170 can be altered by 2N7000, if this type is still not there, you can search cross reference for it. Or ask directly at your local electronics store.

]]> By: jahir uddin https://amplifiercircuit.net/guitar-pre-amp-based-fet.html#comment-4488 Fri, 27 Jan 2012 16:08:34 +0000 http://amplifiercircuit.net/?p=565#comment-4488 Hi Dera How are you . I have problem for this pree amp making because of this transistor is not avail able in our country.Please give me concern for common and alternative transistor .
Thanks
Jahir
Bangladesh

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