Parts for the preamp and Time Signal Interface are available from Digi-Key Electronics Supply mail order house.
Parts for the Power Supply are available at Radio Shack.
PARTS LIST - Preamplifier Electronics:
Quantity DigiKey Part# Description
1 MAX420CPA-ND Maxim 420CPA CAZ Op Amp
(MAX422CPA-ND is O.K.)
1 LF353N-ND LF353/TL082 Op Amp
4 P4525-ND 0.1 mFd capacitor
1 P4513-ND 0.01 mFd capacitor
1 10MEBK-ND 10 Meg resistor
2 5.1MEBK-ND 5.1 Meg resistor
(2.2MEBK-ND) (2.2 Meg for 1.4-S period)
(1.0MEBK-ND) (1.0 Meg for 0.63-S period)
1 68KEBK-ND 68 k resistor
1 51KEBK-ND 51 k resistor
1 30KEBK-ND 30 k resistor
1 10KEBK-ND 10 k resistor
1 1.0KEBK-ND 1 k resistor
1 CT9W104-ND 100 k multi-turn trimpot
PARTS LIST - WWV Time Signal Decoder:
1 LF353N-ND LF353/TL092 Op Amp
3 LM567CM-ND LM567 Phase Lock Loop/Dec
1 P6632-ND 47 mFd capacitor
2 P6630-ND 22 mFd capacitor
3 P6627-ND 4.7 mFd capacitor
1 P4540-ND 0.22 mFd capacitor
8 P4525-ND 0.1 mFd capacitor
1 150KEBK-ND 150 k resistor
5 10KEBK-ND 10 k resistor
1 CT9W104-ND 100 k multi-turn trimpot
3 CT9W203-ND 20 k multi-turn trimpot
1 CT9W103-ND 10 k multi-turn trimpot
PARTS LIST - Dual 12-Volt Power Supply
Note: Using Radio Shack Part Numbers
1 273-1366 Standard 25.2VCT Power Transformer
1 276-1152 1.4A, 100V Full-Wave Bridge Rectifier
2 272-1022 4,700 mF, 35V Electrolytic Capacitor
2 RSU 11295821 0.1 mF, 35V Tantalum Capacitor (not critical)
1 276-1771 7812 Positive Voltage Regulator
1 RSU 11513785 7912 Negative Voltage Regulator
Feb 6, 2001
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