This module can be used in your prototyping process as a square
wave signal generator to produce square wave signals for experimental
development use, or in applications such as driving stepper motors, as
an adjustable pulse for microcontroller applications.
boasts an NE555 timer chip configured in four frequency ranges,
50Hz to 1kHz,
1kHz to 10kHz and
10kHz to 200kHz (H jumper)
with an onboard jumper along with two trim-pots to adjust the output
frequency and the duty cycle.
Input voltage to the module is variable from 5v to 15v DC and draws
approximately 15mA at 5v (35mA at 12v) with a output amplitude of 4.2v
peak-to-peak to 11.4v peak-to-peak (based on supply voltage).
Included onboard is an indicator LED indicator which illuminates on
a low-level output and flashes relative to the output frequency. At
higher frequencies, the LED will appear to be solid eventually dimmed (depending on duty cycle)
Size: 3.1CM * 2.2CM
Period T = 0.7 (RA +2 RB) C
RA, RB is 0-10K adjustable;
Low profile when C = 0.001UF;
IF stalls C = 0.1UF;
High-frequency file C = 1UF;
HF stalls C = 100UF