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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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UPD6465CS датащи(PDF) 30 Page - NEC |
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UPD6465CS датащи(HTML) 30 Page - NEC |
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30 / 52 page  µPD6464A,6465 30 5. COMPOSITE SYNC. SIGNAL SEPARATION CIRCUIT An example of composite sync. signal separation circuit is shown in Figure 5-1. Figure 5-1. Composite Sync. Signal Separation Circuit (a) Example of Composite Sync. Signal Separation Circuit R1 = 5.1 k Ω, R2 = 1.2 kΩ, R3 = 1 kΩ, R4 = 220 Ω, R5 = 100 kΩ, R6 = 10 kΩ, R7 = 1 kΩ, R8 = 2.2 kΩ, R9 = 10 k Ω, C1 = 10 µF, C2 = 1 µF, C3 = 1000 pF (b) Image of sync. signal separation waveform The slice level (VS) of Figure 5-1 (a) is defined as follows. VS = 2.7 × R5 × T2 = 74 mV R4 T1 . . R1 R3 R5 R2 Q1 a b + + C1 C2 Composite video signal (2 Vp-p) VC c Isp IX R4 R8 R9 C3 Q2 R6 R7 Q3 VDD = 5 V Composite sync. signal (sync. positive) 0.7 VDD (MIN.) 0.3 VDD (MAX.) Input to pin 17 T1 T2 T1 = 4.7 s T2 = 58.86 s VC2 ∆VC VC3 VC1 µ µ |
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