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LM139,A-LM239,A-LM339,A 6/10 TYPICAL SINGLE (continued) TIME DEALY GENERATOR LOW FREQUANCY OP AMP WITH OFFSET ADJUST ZERO CROSSING DETECTOR (single power supply) VCC O A 0 tt V(ref.) 10kΩ 1/4 10kΩ 15kΩ 200kΩ 3kΩ 10MΩ 3kΩ 3kΩ 10kΩ 10MΩ 10kΩ V O2 V O3 10MΩ 10kΩ O1 V 51kΩ 51kΩ V1 V2 51kΩ 0.001µF V C1 V3 INPUT GATING SIGNAL VCC V C1 V1 V2 V3 0 0 1 t t 3 t 4 t 2 t t VCC t0 t1 VCC t0 t2 VCC t0 t3 VC C =+15V 1/4 LM139 1/4 1/4 LM139 LM139 LM139 e I ~ 2N 2222 5V eo R1 100k Ω 1k Ω 5V 1M Ω 100k Ω 1M Ω Offset Adjust Rs RI 15k Ω 0.5 µF R2 1/4 LM139 100k Ω 10k Ω eI 20M Ω 5V 5.1k Ω 1N4148 5.1k Ω 5.1k Ω 100k Ω 1/4 LM139 |
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