MC741A/B Signal Conditioner
2026-11-13
MC741A/B signal conditioner can provide 200 V polarization voltage for external
polarized microphones and also provides ±15 V or ±60 V power supply to preamplifiers. The device has single channel
LEMO input and BNC output and supports both battery and external power supply
options. Specifically, the MC741A supports a wide DC voltage range of 7
V~30 V, while the MC741B is powered by three LR6/AA batteries.
MC741A/B also offers signal conditioning with gain of x0.1, x1, x10, x100, as well as
linear, band-pass (20 Hz~20 kHz), A-weighting, and C-weighting filters. The
polarization voltage can be set to 0 V or 200 V, with the ±60 V supply only available for x0.1 gain.
MC741A/B has
an all-aluminum housing, which can effectively shield the internal signal. The
LED indicator displays the power supply status and input overload conditions.
The device has a 60 Vp input and output protection circuit, which can protect
sensors and data acquisition equipment.
MC741A/B supports TEDS, DIR OUT and Self-Check functions. If not in use, TEDS and Self
Check should be turned off to avoid affecting signal quality.
The TEDS function only line out the TEDS
signal. It’s also need a dedicated TEDS reader/writer
to access TEDS information.
DIR OUT function can directly output the
preamplifier signal, in which case the output noise and frequency response are
completely determined by the preamplifier, and the output bias voltage may
increase slightly. ★Note that this function should only
be used by experienced operators, improper use may damage the preamplifier or
data acquisition equipment.
Features:
● Provides 200 V polarization voltage
for externally polarized microphones
● Provides ±15 V or ±60 V power supply
for preamplifier
● Single-channel LEMO input and BNC
output connector
● 4-stage gain (x0.1, x1, x10, x100)
● Linear, Band-pass (20 Hz~20 kHz),
A-weighting and C-weighting filters
● TEDS, DIR OUT, and Self-Check
functions
● MC741A is powered by power adapter,
while MC741B is powered by battery
Applications:
● Power supply for the external
polarized microphone and attached preamplifier
● Common signal conditioner (amplifier
and filter)
Please click the link below for detailed
information:
