How do i block the dc component of my signal with frequency of 1-10hz?

Question

How do i block the dc component of my signal with frequency of 1-10hz?

Answer 1

A large non-polarized capacitor in series. It's value depends on the value of the resistance of the circuit.

10 k impedance, you will need a cap of

X = 1/2πfC where f = 1 Hz

X is small compared to the 10k

1k = 1/6C

C = 1/6000 = 200uF

1k impedance, C goes up to 2000uF

These are very difficult to get as non-polarized. A non-ideal solution is to use two polarized caps of twice the value connected in series with the polarities reversed, ie, -  to  -.

Answer 2

With a large value non-polarized ceramic capacitor connected in series.

Answer 3

For your own merits, observe how the output of an amplifier

is coupled to the input of the succeeding amplifier stage. A coupling condenser is used other wise known as a blocking

capacitor to block the DC supply of the output circuit and also

the input bias of the next stage.