To analyze the acoustic properties of a room (usually a living-room), a good pink noise generator together with a spectrum analyzer is indispensable. You also need a microphone with a linear frequency characteristic (from 20 to 20000Hz.).
Technical Specifications:
- Random digital noise.
- 33 bit shift register.
- Clock frequency adjustable between 30KHz and 100KHz.
- Output voltage : 150mV RMS./ clock frequency 40KHz.
- Output impedance : 1K ohm.
- Pink noise filter : -3 dB per octave (20 .. 20000Hz.)
- Power supply : 9 to 12VAC, or 12 to 15VDC / 5mA
Parts List:
| Label |
Reference |
Qty |
Description |
| C1 |
C680 |
1 |
680pF CERAMIC CAPACITOR |
| C10, C11 |
SI100N0 |
2 |
SIBATIT 100nF-63V |
| C12 |
10J0E |
1 |
ELCO PCB 10?F-35V |
| C13 |
100J0D |
1 |
ELCO PCB 100?F-25V |
| C3, C6 |
C10N0 |
2 |
10nF CERAMIC CAPACITOR |
| C5 |
C22N0 |
1 |
22nF CERAMIC CAPACITOR |
| C7 |
C4N7 |
1 |
4.7nF CERAMIC CAPACITOR |
| D1, D2 |
1N4148 |
2 |
1N4148 (1N914) |
| D3 |
1N4007 |
1 |
1N4007 DIODE 1A-1000V |
| IC1, IC2 |
CD4006 |
2 |
CD4006BE 18 STAGE SHIFT REGISTER |
| IC3 |
CD4093 |
1 |
CD4093BE 4 X 2 NAND SCHMITT-TRIGGER |
| J |
DBL |
1 |
JUMPER |
| R1, R7 |
RA10K0 |
2 |
RESISTOR 1/4W 10K |
| R10 |
RA220K0 |
1 |
RESISTOR 1/4W 220K |
| R11 |
RA1K0 |
1 |
RESISTOR 1/4W 1K |
| R2, R3 |
RA100K0 |
2 |
RESISTOR 1/4W 100K |
| R5 |
RA47K0 |
1 |
RESISTOR 1/4W 47K |
| R6 |
RA22K0 |
1 |
RESISTOR 1/4W 22K |
| RV1 |
K220SV |
1 |
PIHER TRIM 220K SMALL VERT. |
| T1 |
BC547B |
1 |
BC547B SI-NPN UN 50V-0.2A |
| VR1 |
UA78L08 |
1 |
UA78L08 100mA 8V PLASTIC |
| 14P |
14P |
3 |
14P DIL IC SOCKET 300MIL |
| H4301 |
H4301 |
1 |
MANUAL |
| P4301 |
P4301 |
1 |
PCB |
| PRINTPZ |
PRINTPZ |
1 |
10 PCB TABS |
Hot New Products
RC Cars
