Generator
Main Features
-Main IC used: NE555
-Power supply voltage: 5-15VDC, current 100MA.
-Output current is 15mA @ 5V power supply; 35mA @ 12V power supply.
-Output amplitude: 4.2V V-PP -- 11.4V-PP. (Out amplitude varies from voltage input).
-Max. output current: 15MA (5V power supply, V-PP>50%), 15MA (12V power supply, V-PP>50%).
-With output LED indicator, When it is in low level, LED is off, when it is in high level, LED is on, when frequency is low, the LED is flashing.
-Output frequency range is selectable and adjustable .
-Four types of frequency range output:
Low frequency range: 1Hz~50Hz
Medium frequency range: 50Hz~1kHz
Medium high frequency range:1kHz~10kHz
High frequency range: 10kHz~200kHz
-Small size: 35x33mm. height: 15mm
Typical Applications
-Stepping motor driver.
-Generate adjustable pulse signal for MCU.
-Generate adjustable pulse to control circuit.
-Used as square wave signal generator in square wave meters testing.
NE555 Square Wave Generator Adjustment
Adjustable Output Frequency Calculation Formula:
Cycle T=0.7(RA+2RB)C
RA, RB Potentiometer: 0-10K adjustable.
@Low frequency range: C=0.001uF.
@Medium frequency range: C=0.1uF
@high frequency range: C=1uF
@High frequency range: C=100uF
*It is not suitable for too much high precision application requirements purpose.