
      12 September 1993   MGJ


IDENTIFIER     DESCRIPTION
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SENSOR         LM34 (National Semiconductor).  Buy the cheapest "grade"
               or "suffix" they will sell you.  Sold by Digi-Key.

IC-1           LM331 (National Semiconductor).  Sold by Digi-Key.

IC-2           74C74 CMOS dual-D-flipflop.

REG            78L05 +5V regulator in TO-92 (transistor) package

C1,C2          100uF electrolytic capacitors, DC voltage ratings as needed

C3             1.0uF film capacitor (I used mylar)

C4             0.01uF (10,000pF) film capacitor (I used polystyrene)

C5             0.1uF film capacitor (I used mylar)

R1             2.0Kohm

R2,R3          100Kohm, metal film preferred

R4             47 ohm

R5             13Kohm, metal film preferred

R6,R8          10Kohm

R7             6.8Kohm, metal film preferred

R9             100 ohm

ADAPT          AC Adaptor; wall-plug-and-transformer type, with
               DC output voltage somewhere between 7V and 30V DC.

Plug           Miniature 1/8" (3.5mm) plug for SPARC input
