Как сделать индикатор уровня звука на LM3915 Простая схема

Описание: @radal05
Cara membuat indikator level audio dengan LM3915 Sederhana schematic
Link pembelian :
1. IC LM3915
https://shopee.co.id/product/39973855...
2. LM3915N Display IC Dengan Harga Minimal 100rb
https://shopee.co.id/product/38187023...


What is the LM3915 IC?
The LM3915 datasheet specifies that the IC is a monolithic integrated circuit that senses analog voltage levels and drives ten LEDs, LCDs or vacuum fluorescent displays, providing a logarithmic 3 dB/step analog display. One pin changes the display from a bar graph to a moving dot display. LED current drive is regulated and programmable, eliminating the need for current limiting resistors. The whole display system can operate from a single supply as low as 3V or as high as 25V.

Cara membuat indikator level audio dengan LM3915 Sederhana schematic
LM3915 Features and specs
3 dB/step, 30 dB range
Drives LEDs, LCDs, or vacuum fluorescents
Bar or dot display mode externally selectable by user
Expandable to displays of 90 dB
Internal voltage reference from 1.2V to 12V
Operates with single supply of 3V to 25V
Inputs operate down to ground
Output current programmable from 1 mA to 30 mA
Input withstands ±35V without damage or false outputs
Outputs are current regulated, open collectors
Directly drives TTL or CMOS
The internal 10-step divider is floating and can be referenced to a wide range of voltages


00:00 Radal 05
00:14 VU Meter LM3915 Input Pre Amp
00:44 Tes VU Meter sederhana
02:23 Pemasangan
02:37 Skematik
04:10 Assembly
06:27 Datasheet LM3915

Cara membuat indikator level audio dengan LM3915 Sederhana schematic