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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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TMS3637D Arkusz danych(PDF) 38 Page - Texas Instruments |
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TMS3637D Arkusz danych(HTML) 38 Page - Texas Instruments |
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38 / 53 page  6–6 Table 6–3. Infrared Transmitter Component Functions (Normal Transmission Mode) DEVICE FUNCTION U1 TMS3637 configured as a normal continuous transmitter R1 Resistor on OSCR that, in conjunction with C1, determines the internal oscillator frequency of U1. R2 Current-limiting resistor for LED R3 Current-limiting base-drive resistor for Q1 R4 Pullup resistor for OUT on U1 and bias for Q1 R5 Current-limiting collector resistor for Q1 R6 Pullup resistor for TIME C1 Capacitor on OSCC that, in conjunction with R1, determines the internal oscillator frequency of U1. C2 Power-supply bypass capacitor D1 LED for visual indication of transmitted code D2 Infrared LED used to transmit code Q1 The pnp transistor that drives infrared LEDs S1 S1 is closed for transmission. R1 100 k Ω OSCR OSCC TIME GND C1 470 pF VCC IN CEX OUT U1 (transmitter) R3 220 Ω R2 220 Ω D2 C2 100 µF R5 3.9 Ω D1 R4 10 k Ω VCC + 87 6 5 1 234 R6 10 k Ω R6 10 k Ω Q1 Figure 6–4. Infrared Transmitter |
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