zhang_junyang

riot

nitrogen

Hi, i dun exactly understand what u mean by "the SQ will be 'degraded' if the LPF is constructed using passive components", can explain a bit? Thanks. Btw, the low pass filter allows only freq below the fc to pass through. The 10uf is too high here resulting in a very low fc. Also, the opamp may not be able to drive such a large capacitive load at its output. Performance will be impaired and instability and oscillation may occur.

U put a series resistor 100ohms at the output and then a parallel capacitor 10uF at the output to gnd and what u get is a low pass filter. u can calculate the theoretical cutoff freq and see what u get.

blue

watt

civic

Hi, are you interested to do MO for the casing from farnell or RS? I got everything for myself and 2 friends but we have not bought the casing yet.

Ideally, the beta value of a transistor should be taken based on the same operating conditions that it will be operating in the amplifier. 2 transistors that are matched under a circuit may not be matched when they are put inside the amplifier circuit. However in reality, I would not worry too much about matching transistors as they are mostly not critical. An approximate matching using the dmm will do.

fearsome

engine

fry

french

tie

together

cancer

pocket

love

syringe

bypass

strong

shiok

right

run

samples