Amplifier-Filter Circuit

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. 

 

amp_filt.gif (80872 bytes)

 

Parts List

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.

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