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Modul generator semnal audio

Input Voltage:5V-15VDC.
Input current: ≥ 100MA
Maximum output current: ≥15MA (5V power supply, V-PP greater than 50%), ≥ 35MA (12V power supply, V-PP greater than 50%)
Output Amplitude: 4.2V V-PP to 11.4V V-PP
Output with LED indication
Output frequency range grade optional:

Low-frequency stall: 1Hz-50Hz
IF stall: 50Hz-1kHz
High-frequency stall: 10kHz-200kHz
In the high-frequency stall: 1KHz-10kHz

Output frequency is adjustable :

the Cycle T = 0.7*(Ra + 2*Rb)*C

Ra, Rb:0-10K adjustable
LF gear C = 0.001UF
IF file C = 0.1UF
In the high-frequency file C = 1UF
High-frequency gear C = 100UF

NOTE: Output duty cycle can fine-tune, the duty cycle and frequency is not adjustable separately adjust the duty cycle will change the frequency.