| Req'd |
ID |
Industry Part |
Description |
Package |
Digi-key Part * |
| 1 |
U1 |
KMZ51 |
Magneto-resistive bridge sensor |
SOIC-8 |
568-2425-1 $6.46 |
| 1 |
U2 |
LM358 |
Dual Op-amp |
DIP-8 |
296-1395-5 $0.45 |
| 1 |
U3 |
LM78L05 |
Voltage regulator, 5V |
TO-92 |
MC78L05BP-APMSCT $0.20 |
| 1-opt |
U4 |
CD4011 |
Quad NAND (latches, logic) |
DIP-14 |
CD4011BCN $0.50 |
| 1-opt |
C1 |
.1 µF |
Capacitor (latch startup) |
Radial |
P4924 $0.15 |
| 1 |
C2 |
1 µF |
Capacitor, tantalum (reset) |
Radial |
478-1833 $0.46 |
| 1-opt |
C3 |
.47 µF |
Cap, tant. (G-switch debounce) |
Radial |
478-1900 $0.46 |
| 1 |
C4 |
.33 µF |
Cap, tant. (regulator filter) |
Radial |
478-1883 $0.46 |
| 1 |
C5 |
.01 µF |
Cap (regulator filter) |
Radial |
P4922 $0.13 |
| 1-opt |
C6 |
1000 µF 10V or 16V |
Cap, electrolytic, .2" pitch, .4" diam |
Radial |
565-1041 (16V) $0.39 |
| 1 |
R1 |
1 kΩ |
Resistor |
1/8 Watt |
|
| 1 |
R2 |
~2 MΩ |
Calibration resistor |
1/8 Watt |
|
| 1 |
R3 |
470 Ω |
Resistor |
1/8 Watt |
|
| 1-opt |
R4 |
100 kΩ |
Resistor |
1/8 Watt |
|
| 1-opt |
R5 |
1 MΩ |
Resistor |
1/8 Watt |
|
| 1-opt |
R6 |
10 MΩ |
Resistor |
1/8 Watt |
|
| 1 |
R7 |
1 MΩ |
Resistor |
1/8 Watt |
|
| 1 |
D1 |
LED |
High-efficiency light emitting diode |
T1 |
516-1302 $0.42 |
| 1 |
SW1 |
SPST-NO |
Momentary switch (reset) |
4.5 x 6.5mm 4-pin |
SW405 $0.23 |
| 1 |
J1 |
- |
Terminal block, 4 pos |
.1" pitch |
277-1275 $2.30 |
| Terminal block, 6 pos |
277-1277 $3.44 |
| 1 |
Q1 |
IRFD110 |
FET power transistor |
DIP-4 |
IRFD110PBF $1.60 |
| ZVN3306A |
FET power transistor |
TO-92 |
ZVN3306A $0.84 |
* Append "-ND" to all part numbers. Prices are current as of 3/14/07.