Pages

Monday, December 7, 2015

Variable 5 to 20V DC Supply Rise

Variable 5 to 20V DC Supply Rise - In the event that you are searching for a low drop voltage controller that can give a force supply of 1A with a yield voltage of somewhere around 5V and 20V DC, National Semiconductor LM2941 Low Dropout Adjustable Regulator is that you can pick to make utilization of. Its a run of the mill dropout voltage of 0.5V which implies that the data supply require just must be 0.5V DC over the fancied yield voltage. Its different elements incorporate interior short out current breaking point and turn around battery security.

As appeared in the schematic beneath, the controller has five pins which comprises of the ON/OFF control, Input Voltage, Output Voltage, Ground and Adjustable pins. ON/OFF is utilized with the end goal of exchanging on and off of the controller. The capacitors C1 and E1 are to be set as close as possible to the controller.

The yield of the circuit can be changed by shifting the value of potentiometer VR1 from 5V DC to 20V DC. The info voltage is constrained from five.5V DC to 30V DC. Resistor R1 must be more prominent than 1K. The value of the VR1 that should be set is figured from the equation given beneath:

VR1 = R1[(Vout/1.275) - 1] ohm
On the off chance that R1=1K, Vout = 5V, VR1 ought to be set to 2.9K ohm.
On the off chance that R1=1K, Vout = 20V, VR1 ought to be set to 14.7K ohm

No comments:

Post a Comment