![]() P1 can be adjusted for acquiring accurate frequencies as per the required specs of the application. The following explanation will walk us through the various stages of the circuit, lets learn them: As can be witnessed in the given diagram, the IC SG3525 is rigged in its standard PWM generatoroscillator mode where the frequency of oscillation is determined by C1, R2 and P1. Lets learn more about the request and the circuit functioning.ĭesign1: Basic Modified Sine In one of the earlier posts I discussed the pin out functioning of the IC 3525, using the data, I designed the following circuit which is though quite standard in its configuration, includes a low battery shut down feature and also an automatic output regulation enhancement. This circuit was requested by one of the interested readers of this blog. The first circuit is equipped with a low battery detection and cut off feature, and an automatic output voltage regulation feature. ![]() Once this is set, if the battery voltage tends to go below the low voltage mark, the output of the IC instantly becomes high, activating the shut down feature of IC1, inhibiting any further loss of battery voltage. ![]()
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