. Basic semiconductor circuitry for ecological and behavioral studies of insects. Insects Behavior Research; Insects Ecology Research. SERIES "VV^^vVV" «2 B SERIES PMAUEl Figure and series parallel circuits. A. 1^1 = manual variable potentiometer (30,000 ohms); Rp = microatmaeter or microampere recorder (7^00 ohms). B. ^-1 - manual variable potentiometer (30,000 ohms); R2 = shunt resistor (200 ohms); R:? = microajmneter or microampere recorder (7^00 ohms). CL SOS L. Figure or dew recorder circuit. CL505L = cadmium-sulfide cell; Rg = Sigma 5ss 50-ohm relay;

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. Basic semiconductor circuitry for ecological and behavioral studies of insects. Insects Behavior Research; Insects Ecology Research. SERIES "VV^^vVV" «2 B SERIES PMAUEl Figure and series parallel circuits. A. 1^1 = manual variable potentiometer (30,000 ohms); Rp = microatmaeter or microampere recorder (7^00 ohms). B. ^-1 - manual variable potentiometer (30,000 ohms); R2 = shunt resistor (200 ohms); R:? = microajmneter or microampere recorder (7^00 ohms). CL SOS L. Figure or dew recorder circuit. CL505L = cadmium-sulfide cell; Rg = Sigma 5ss 50-ohm relay; BIO = International Rectifier selenium sun cell; R-j_ - O-5O ohm, trimmer potentiometer; Ro = O-5OO ohm trimmer potentiometer; Si = 3 position shunt switch; ^2 = on-off switch. - 10 -. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Callahan, Philip S. , 1923-; United States. Entomology Research Division. Beltsville, Md. : U. S. Dept. of Agriculture, Agricultural Research Service

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