WiMo W2IHY, Руководство по эксплуатации

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-12-
(18) Phones (J3)
(19) Power
1/4“ Stereo headphone connector used to monitor audio from
the equalizer. The output level of this connector is controlled by
phone volume control R29 (1)
(An inline adapter
should be used with headsets that do not use 1/4“ stereo
connectors. Stores like Radio Shack have audio plug adapters
available.)
5 Pin Din connector. 7 - 14 VDC input at 100 ma.
Headphones using other than
1/4“ stereo connectors may not operate properly when
plugged into stereo phones connector J3.
+7 to 14V
GND
Power
5 Pin Male DIN
Din connectors shown
on side to be soldered
(17) Mic Output B (J4)
5 Pin female DIN connector that has noise gate / equalizer
audio plus push to talk outputted. This connector is active
only when the Mic Out Slide Switch S4 (15) is in the Mic Out
select B position.
Gnd
PTT
- Mic
+ Mic
Balanced
Output
Hi-Z Output
MIC OUT A/B
5 Pin Male DIN
Din connectors shown
on side to be soldered
REAR PANEL CONTROLS
-17-
C2 - .1uf
100 Hertz
C1-.01uf
7
R1
3.3K
R2
3.3K
R5 - 100 K
U2b
TL074
+
-
R6
100K
R3
1 M
R4
1 M
Each EQ bandpass filter is very similar. The center frequencies, of each
bandpass filter is determined by the values of the capacitors and
resistors used. The equations below define what capacitor values are
required for a given center frequency. Below is a schematic of a
bandpass filter with a center frequency of 100 Hz.
C1= (.9046) / (Freq in Hz.) <=In uf => C2=C1 x 10
The above equations are valid for only the resistor values shown in the
schematic above.
The bandpass filter in the schematic has a center frequency at 100 hz.
example: The capacitor values required to obtain a bandpass filter center
frequency of 4800hz is calculated as follows:
C1=.9046/FREQ=.9046/4800=,0001885UF=188.5 PF
C2=C1 x 10= .0018858uf
The closest real value capacitors that can be purchased are as follows
- C1 calculates to be 188.5 pf. The closest real value that
can be purchased is 180 pf
- C2 calculates to be .001885 uf. The closest real value that
can be purchased is .0018uf
CHANGING EQ BANDPASS
FILTER CENTER FREQUENCIES