M
[email protected]
- Jan 1, 1970
- 0
Hi, first time on the forum here
I got a questions in regarding electret mics. I'm building a simple
circuit for my assignment. It is to use electret mic, dc offset, amp,
filter and through STK500 kit then then to the output.
I'm trying apply DC offset to my electret mic, so I can bring the -2.5V
to 2.5V up to 0 to 5V. The problem that I'm having is that, when I put
in the DC offset into the circuit, I get nothing from the output. It's
like its been grounded. And without the dc offset, the mic works fine.
I've tried putting in an unity gain after the mic(before the offset),
the same thing happens. Please help if you can.
Circuit:
5V
----------------------------------
| |
< 2.2k < 2k
amp|------|Filter|-------(STK500)--|Output circuit|
MIC <
| >2k
=== |
-- ===
----
I got a questions in regarding electret mics. I'm building a simple
circuit for my assignment. It is to use electret mic, dc offset, amp,
filter and through STK500 kit then then to the output.
I'm trying apply DC offset to my electret mic, so I can bring the -2.5V
to 2.5V up to 0 to 5V. The problem that I'm having is that, when I put
in the DC offset into the circuit, I get nothing from the output. It's
like its been grounded. And without the dc offset, the mic works fine.
I've tried putting in an unity gain after the mic(before the offset),
the same thing happens. Please help if you can.
Circuit:
5V
----------------------------------
| |
< 2.2k < 2k
|----------||---------|------------------|LM32410uF >
amp|------|Filter|-------(STK500)--|Output circuit|
MIC <
| >2k
=== |
-- ===
----