LB1412M - Sanyo

LB1412M Level Meter for 12 LEDs

of constants of each block 2-1 R3, R4 (R11, R12) The gain of amp1 depends on R3, R4. Gain of amp 1 = R3/R4 times. The gain of amp1 must not exceed 4 times (12 dB). R3 + R4 6 100 kΩ (C4 = 4.7 µF). 2-2 C2, C3 (C5, C6) C3 is for coupling amp 1 with amp 2 and its value is 1 µF. C2 is for controlling the time to turn off LED. 2-3 R2 (R10) The current of LEDs conn.

Features

Package Dimensions unit : mm . Bar-shaped display of input level by means of 12 LEDs. . High-order 5 dots with peak hold. . Built-in oscillator for peak hold reset. Requires 1pce each of . . . . . external C, R. Uses either oscillator at the time of stereo operation. Also capable of resetting manually. Capable of constant-current driving low-order 7 dots (green LED). Constant-current value variable with an external resistor. Lower current drain available by connecting green LEDs in series. Built-in input amplifier. Requires no other light-up level adjustment than adjustment for 0 dB. D1 erro.