amb
Member of the Trade: AMB Laboratories
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- Apr 1, 2004
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pabbi1, if you must use Vishay-something (although I am not sure why that is important), there is Vishay-BC PR02 series 1 ohm 2W metal-film resistors for R9. Mouser #594-5083NW1R000J
z2trillion, do not change R9 to 10 ohms. If you do you won't be able to properly adjust the bias of the MOSFETs without also changing the value of R7. Changing R9 to 10 ohms will increase the output impedance somewhat, but more importantly it will reduce available voltage swing because of the voltage drop across them will be 10x compared to 1 ohm given a particular quiescent current setting.
z2trillion, do not change R9 to 10 ohms. If you do you won't be able to properly adjust the bias of the MOSFETs without also changing the value of R7. Changing R9 to 10 ohms will increase the output impedance somewhat, but more importantly it will reduce available voltage swing because of the voltage drop across them will be 10x compared to 1 ohm given a particular quiescent current setting.