Submitted below a very low-cost UPS for modem. Modems / WiFi routers are usually powered by an adaptor and while the utility power fails then internet connectivity is disrupted even if the power is interrupted for less than a second. Providing a commercial 500VA UPS only for the purpose is an expensive proposition. Small duration …
A very low cost module (< $3) with excellent Features: LCD display of frequency and duty cycle PWM output can be set to the specified frequency and duty cycle. Wide frequency range with high accuracy; Serial communication features, TTL level Parameter settings The module has four independent buttons, used to set the frequency and duty …
PWM Module having Adjustable Frequency & Duty Cycle with LCD Display Read More »
