Features:
The output frequency or square wave of the work cycle is adjustable.
Output with LED indicator. When a low electric level is emitted, the indicator lights up. Otherwise, the LED will be off when it is output high. The indicator flashes when the frequency is lower.
Application:
The adjustable pulse is generated for the use of an MCU or control circuit.
For creating a rectangular signal to drive a stepper motor driver or for experimental development.
Specification:
Mainly IC: NE555
VCC: DC input, positive power supply
GND: function earth, negative power supply
Out: high or low electric level output
Input voltage: DC 5 V - 15 V.
Input current: more than 100 mA.
Output current: more than 15 mA (5 V power supply and when V-PP more than 50 %); more than 35 mA (12 V power supply and when V-PP more than 50 %).
Output amplitude: 4.2V V-PP to 11.4V V-PP (the value changes depending on voltage).
Hole spacing: 30 x 22 mm / 1.18 x 0.87 inch (L x W).
Total size: 36 x 29 x 16 mm / 1.42 x 1.14 x 0.63 inches (L x W x H).
Adjustable frequency (with short circuit cap):
The formula is as follows: T=0.7(RA+2RB)C (0-10K Ohm adjustable for RA,RB)
1-50Hz position, C = 0.001UF.
50-1 kHz position, C = 0.1UF.
1K-10KHz position, C = 1UF.
10 K - 200 kHz position, C = 100 UF.
Box contents:
3 x module board.