I-AVT1853 - I-RGB LED
Isihluthulelo sephathi ephumelelayo akuwona nje umculo omuhle, kodwa futhi nokukhanya okuhle. Isistimu yomshayeli we-RGB ye-LED eyethulwe izokwanelisa okulindelwe ngisho nabaya ephathini abafuna kakhulu.
Umdwebo we-Schematic we-RGB illuminophony uboniswa kuMfanekiso 1. Uqukethe isilawuli esincane, iamplifier esebenzayo kanye nama-transistors amandla. Isignali yokufaka nge-capacitor C1 inikezwa okokufaka kwe-amplifier yokusebenza. I-voltage ye-bias yokufaka inqunywa isihlukanisi esakhiwe kusuka ku-resistors R9, R10, R13, R14. I-microcontroller (ATmega8) ivalwe i-RC oscillator yangaphakathi egijima ngo-8 MHz. Isignali ye-analog evela kusikhulisamsindo ikalwa ngesiguquli se-A/D futhi sisetshenziswe kokokufaka kwe-PC0. Uhlelo "lukhetha" kusiginali yomsindo izingxenye ezikumabanga alandelayo amafrikhwensi:
- Phezulu: 13…14 kHz.
- Isilinganiso esingu-6…7 kHz.
- Phansi 500 Hz…2 kHz.
Uhlelo lube selubala ukushuba okukhanyayo kwesiteshi ngasinye futhi lulawule i-transistor ephumayo ngokulingana nomphumela. Amadivayisi asebenzayo ama-transistors T1 ... T3 (BUZ11) anomthamo ophezulu wamanje wokulayisha. Ibhodi linokufaka kwe-CINCH kokufaka okuqondile kwesiginali ye-AUDIO enezinga elingu-0,7 V (okukhiphayo okujwayelekile kwe-headphone). Umthombo womsindo ungakhethwa kusetshenziswa i-SEL jumper: CINCH (RCA) noma imakrofoni (MIC).
Umphumela ukhethwa ngenkinobho ye-MODE (S1):
- Umbala obomvu.
- Umbala oluhlaza okwesibhakabhaka.
- Umbala oluhlaza.
- Umbala omhlophe.
- Ukukhanyisa.
- Ukushintsha kombala okungahleliwe kuya kusigqi sebhesi.
- Okuhlukile.
Siqala umhlangano ngama-soldering resistors nezinye izakhi ezincane ebhodini, futhi siqeda ngokuhlanganisa ama-electrolytic capacitors, ama-transistors, ama-screw connections kanye nesixhumi se-CINCH.
Imakrofoni ingathengiswa ngqo emgqeni ogobile ngezikhonkwane zegolide. Idivayisi ehlanganiswe ngaphandle kwamaphutha, isebenzisa isilawuli esincane esihleliwe nezinto zokusebenza, izosebenza ngokushesha ngemva kokuvula i-voltage yokuhlinzeka.
Bheka futhi:
