21 November 2011 Tinggalkan komentar
This series is the volume of the digital amplifier that is used on or tone control. This series using ic type DS1669 Digital Pot IC specifically for this match volume.rangkaian settings used at the middle-class amplifier that small powerless under 50 watts.
components: C1 = 0.1uf Ceramic, IC = IC DS1669 Digital Pot, S1 / S2 = digital swicth
Or you can use the series to this one:
The Work: The digital volume control IC uses 9. Required to operate the series voltage regulator is 12 Volt. IC1 (555) is very good to work as a flip-flop. Frequensi or period can be determined with memilh value of resistor R44, R45 is combined with a capacitor C6. In this series has a 0.3 second period.
IC2 is used to increase or decrease the calculation. In the series of this mode is used to raise up and down mode is used to decrease the volume. While IC4 and IC3 has a 16-channel, analogue multiplexers, while working as an analog switch. IC3 is used as in the series of level indicator while IC4 is used as potensiometer.
After the next power in the on-kan, and the switch S1 is pressed to reset. When the switch S2 is pressed, the IC2 and the balance in the form of output ditanggapi legs B, C, and D in CMOS IC2. Output B, C and D control line inputs IC2 and IC3, and the chosen one, the output 16-channel, by turning on the analogue.
In this series, IC4 is used as potensiometer that is connected to the resistor 15 (R9 to R23) each of the 16 input pins and resistor / capacitor combination with C2, C3 and R7 to the output. Switch S2 is used to raise and switch S3 is used to decrease the volume.
Electrolyte capacitor of 1uF (C4) is used utnuk prevent the occurrence of noise. While the R8 and the resistor R6 is used to prevent tension on the half-supply voltage in order to avoid distortion of the audio signal coming from the preamplifier. Meanwhile, capacitor C2, C3 and resistor R7 is provided to filter the audio. Happy work, hopefully successfully.
COMPONENT LIST :
|R1, 2, 3, 4||: 560R||R16||: 1,5K||R45||: 150K|
|R5||: 680R||R17||: 3,3K||C1||: 0,01uF|
|R6, 8||: 100K||R18||: 5,6K||C2, 3||: 100nF|
|R7||: 1M||R19||: 8,2K||C4||: 1uF/50V|
|R9||: 10R||R20||: 15K||C5||: 100nF|
|R10||: 12R||R21||: 33K||IC1||: 555|
|R11||: 42R||R22||: 56K||IC2||: 74193|
|R12||: 100R||R23||: 1,5M||IC3||: CD4067|
|R13||: 220R||R24…R39||: 560R||IC4||: CD4067|
|R14||: 470R||R40..R43||: 4,7K||IC5||: 7805|
|R15||: 820R||R44||: 330K||IC6 N1-N4)||: 7407|