This unit allows you to instantly visualise signal levels from a whole range of different audio sources. For use with mixing panels, amplifiers, CD players, radio's,... A special input is provided, which allows direct connection to a speaker output*. You can select DOT or BAR mode, to suit your application. The kit comes with an attractive display window, which can be used both horizontal and vertical. If nescessary, the unit can be calibrated by means of a trim potentiometer.
* Do not connect to the speaker output of high power car stereo systems !
Technical Specifications:
1 X 10 LED's
BAR OR DOT MODE
INDICATION RANGE: 0dB = 0.775mVrms.
-20dB, -10dB, -7dB, -5dB, -3dB, -1dB, 0dB, +1dB, +2dB, +3dB
FREQUENCY RANGE: 20Hz tot 30KHz
LOW INPUT FOR 0dB: 150mV to 6Vrms (47K)
HIGH INPUT FOR 0dB: 1.5V to 60Vrms (470K).
POWER SUPPLY: 10 to 15VDC / 110mA max.
PCB DIMENSIONS: 68X37mm
Parts List:
Label |
Reference |
Qty |
Description |
C3..C5 |
47J0C |
3 |
ELCO PRINT 47MF-16V |
J1, J2 |
.DBL |
2 |
Thinned CU-wire 0.5mm |
D3 |
1N4007 |
1 |
1N4007 1A/1000V |
D1,D2 |
1N4148 |
2 |
1N4148 small signal diode |
R4, R5 |
RA10K0 |
2 |
RESISTOR 1/4W 10K |
R6 |
RA2K2 |
1 |
RESISTOR 1/4W 2K2 |
R3 |
RA330E0 |
1 |
RESISTOR 1/4W 330E |
R7 |
RA470K0 |
1 |
RESISTOR 1/4W 470K |
R1,R2 |
RA47K0 |
2 |
RESISTOR 1/4W 47K |
R8 |
RC68E0 |
1 |
RESISTOR 1W 68E |
ZD1 |
ZA6V2 |
1 |
ZENER DIODE 6V2-500MW |
C1, C2 |
C220N0M |
2 |
220NF CERAMIC MULTILAYER CAPACITOR |
| � |
F4304 |
1 |
FRONT FOR 10-LED MONO VU-METER |
| � |
H4304B |
1 |
ASSEMBLY MANUAL K4304 |
| � |
H4304P |
1 |
PARTLIST 10-LED MONO VU-METER |
RV1 |
K220SH |
1 |
PIHER TRIM 220K SMALL HOR |
LD1..LD7 |
L-51GD |
7 |
L-51 GD LED 5mm GREEN DIFF. 8mcd |
LD4, LD5 |
L-51HD |
1 |
L-51HD 5mm RED DIFF 2mCd |
LD10 |
L-51YD |
2 |
L-51YD LED 5mm YELLOW DIFF 8mCd |
| � |
P4304 |
1 |
PCB FOR 10-LED VU-METER |
| � |
S/NETLBL |
1 |
STICKER "POWER RATING" |
| � |
S4304 |
1 |
STICKER VOOR K4304 |
| � |
18P |
1 |
18P DIL IC SOCKET 300MIL |
| � |
8P |
1 |
8P DIL IC SOCKET 300MIL |
IC2 |
LM3916 |
1 |
NAT LM3916N LED DRIVER 10LEDS |
IC1 |
UA741M |
1 |
LM741 OP-AMP DIL 8 PINS |