I've been wiring up some amplifier/filter units for use by the CSM students in the EPICS class. Click on the thumb nail below to for a very large version of the circuit. This circuit is only modified slightly from one suggested by Chris Chapman.
| Component Description |
Value | Part Number | Quantity | Unit Price | Cost |
| Resistors (All 1/4 W, 1%) | 360 Ohm | 311-360FCT-ND | 1 | $0.135 (DigiKey)(Min. order of 10) | $1.35 |
| 1 K | 311-1.00KFCT-ND | 1 | $0.135 (DigiKey)(Min. order of 10) | $1.35 | |
| 5.6 K | 311-5.60KFCT-ND | 1 | $0.135 (DigiKey)(Min. order of 10) | $1.35 | |
| 10 K | 311-10.0KFCT-ND | 2 | $0.135 (DigiKey)(Min. order of 10) | $1.35 | |
| 110 K | 311-110KFCT-ND | 2 | $0.135 (DigiKey)(Min. order of 10) | $1.35 | |
| 360 K | 311-360KFCT-ND | 1 | $0.135 (DigiKey)(Min. order of 10) | $1.35 | |
| 4.7 M | 422-4.70MFCT-ND | 1 | $0.135 (DigiKey)(Min. order of 10) | $1.35 | |
| Capacitors | 0.1 uF 100V Metal Film Box | 3013PH-ND | 2 | $0.207 (DigiKey)(Min. order of 10) | $2.07 |
| 0.33 uF 63 V Metal Film Box | 3016PH-ND | 1 | $0.272 (DigiKey)(Min. order of 10) | $2.72 | |
| 1.0 uF 63 V Metal Film Box | 3019PH-ND | 2 | $0.507 (DigiKey)(Min. order of 10) | $5.07 | |
| 3.3 uF 100VDC Metal Poly | E1335-ND | 1 | $2.13 (DigiKey) | $2.13 | |
| Op Amps | Chopper Stabilized CMOS 8-DIP | MAX420CPA | 1 | $8.98 (DigiKey) $6.82 (Maxim) |
$6.82 |
| Dual Low JFET 8-DIP | LF412CN-ND | 1 | $1.13 (DigiKey) | $1.13 | |
| Voltage Regulator | Positive voltage regulator | UA7812CKC | 2 | $0.75 (DigiKey) | $1.50 |
| Protoboard | (5.10"L x 1.90"W) board has plenty of room for medium sized circuits with several IC's and a lot of components. | 12-617 | 1 | $2.20 @ Ocean State Electronics | $2.20 |
| Power Supply | 12VDC, 500MA | WT45-761 | 2 | $6.30 @ Ocean State Electronics | $12.60 |
Total cost of parts when making one unit is $45.69 (many extra parts will be
left over).
Misc. wire and connectors: about $10
Shipping and handling: about $30
Grand total: ~$85.00/unit when making 1.
Cost per unit when making 10 or more units is $29.30.
Misc. wire and connectors: about $5
Shipping and handling: about $3 per unit
Grand total: ~$38.00/unit when making 10.