. Electronic apparatus for biological research . volts Figure Operating characteristics of the Mullard 0CP71 phototransistor lU " Ratio of ''9^* current at T'C junction temperature ~ li ght current at 25*^0 iunctiontemoerature 1 30 ^^^'-^ in -T"***^"*^ IIII -^ 0-3 0-1 5 2 5 3 5 A 5 55 T junction »C Figure The effect of ambient temperature in the output of the Mullard OCP71 phototransistor response is valuable in modulated light systems, or for high-speed counting, especially where an infra-red sensitivity is required. The 0CP71, made by Mullard Ltd., is a phototransi

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. Electronic apparatus for biological research . volts Figure Operating characteristics of the Mullard 0CP71 phototransistor lU " Ratio of ''9^* current at T'C junction temperature ~ li ght current at 25*^0 iunctiontemoerature 1 30 ^^^'-^ in -T"***^"*^ IIII -^ 0-3 0-1 5 2 5 3 5 A 5 55 T junction »C Figure The effect of ambient temperature in the output of the Mullard OCP71 phototransistor response is valuable in modulated light systems, or for high-speed counting, especially where an infra-red sensitivity is required. The 0CP71, made by Mullard Ltd., is a phototransistor of ihQp-n-p alloy 381

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