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3 Segment Music Level Display Kit Sound Control stem Level Indicator Set

1149919

Nieuw product

In stock

21,20 €

Datasheet

Weight0.19

Meer informatie

Feature:

Voltage: 9-15V
PCB size: 160mm * 42mm * 1mm
Principle: The whole circuit is mainly composed of power circuit, audio amplifier circuit, frequency circuit and LED driver circuit.
Each 10 light-emitting diodes can be beat with the level of sound and frequency.
1. Power supply circuit: power supply voltage input 9V-15V, D1 prevents the power polarity from being reversed cause the three terminal regulator broken, C4 filter by the L7806 three-terminal regulator for the entire circuit to provide a stable 6V voltage.
2. Audio amplifier circuit: the electret microphone MK1 will pick up the sound into electrical signals, and by Q1, Q2 two amplification, VR1 can adjust the input Q2 signal size, thus adjusting the sensitivity of the entire circuit.
3. Crossover circuit: As a result of three completely independent LED instructions, so add three frequency circuits to indicate the different bands of sound signals, and then after the secondary transistor to further divide and amplify, in Q4, Q5, Q18 collector to get three different frequency band voltage which come with the external sound size changes (that is, the greater the external sound, the higher the voltage).
4. LED drive circuit: each band has 9 pcs 1N4148 diode, the greater the sound, Q4, Q5, Q18 collector voltage is higher, the more the number of conduction 1N4148, the more the number of LED lighting, and vice versa.

Package includes:

1 x Voice Level Indicator Set










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3 Segment Music Level Display Kit Sound Control stem Level Indicator Set

3 Segment Music Level Display Kit Sound Control stem Level Indicator Set