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  • Sergiy18 followed GreatScottLab6 months ago
  • Sergiy18 commented on leomiranda's instructable Variable Bench Power Supply7 months ago
    Variable Bench Power Supply

    Please, refer to ,y comment below RE recommended improvements ...

    Please, refer to my comment below RE recommended improvements...

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  • Sergiy18 commented on leomiranda's instructable Variable Bench Power Supply7 months ago
    Variable Bench Power Supply

    I have made a similar one. First of all, I've found the LTC3780 module schematic @ http://wiki.beyondlogic.org/index.php?title=WD2002SJ_LTC3780_Synchronous_Buck_Boost_Converter_Ebay_Automatic_lifting_pressureHere are some suggestions for improvement:- to regulate an output current replace a medium 200k potentiometer, pull it to a front panel in the same way it is shown for the voltage regulator.- add 50k potntiometer in sequence with 500k as it is shown at the below circuit for coarse and fine voltage regulation- add a Constant Current (CC) Mode Indicator: I've added a simple CC Indicator based on one transistor (any low power NPN transistor). It works just fine. Schematic:https://drive.google.com/file/d/0ByNQSJffKH-NcmhMZ... Indicator is connected to anode of D2 / output (leg #1) of LM...see more »I have made a similar one. First of all, I've found the LTC3780 module schematic @ http://wiki.beyondlogic.org/index.php?title=WD2002SJ_LTC3780_Synchronous_Buck_Boost_Converter_Ebay_Automatic_lifting_pressureHere are some suggestions for improvement:- to regulate an output current replace a medium 200k potentiometer, pull it to a front panel in the same way it is shown for the voltage regulator.- add 50k potntiometer in sequence with 500k as it is shown at the below circuit for coarse and fine voltage regulation- add a Constant Current (CC) Mode Indicator: I've added a simple CC Indicator based on one transistor (any low power NPN transistor). It works just fine. Schematic:https://drive.google.com/file/d/0ByNQSJffKH-NcmhMZ... Indicator is connected to anode of D2 / output (leg #1) of LM358 op-amp that controls current. +5 rail is available at the module - generated by a LM7805 linear regulator. CC Indicator can be also connected to an input voltage that feeds the module. Then the value of R1 should be changed accordingly.So, I wold highly recommend it to improve your bench power supply! Enjoy.

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