Another one battery charger with LM358 current stabilizer.

[DeepOne]

that already works in hardware test model

 

[kam1787]

interesting!

perhaps you could walk us through the design and explain the advantages of the design?

 

[DeepOne]

First opamp is compare voltages from shunt and current regulator resistors, second - from sawtooth generator and RC chains at output of first opamp - when sawtooth voltage level be more than voltage on capacitor at output of first opamp output of second opamp be high and scr is open. Thereby the angle under which this thyristor is opened depends from voltage on shunt resistor. Also in scheme is added chains for protection from inverted battery connection.

this scheme is based on article from old "Radio" magazine (08_1987) (К140УД1 -> uA702).


possible there is sense to do something similar but with mcu

 

[DeepOne]

test version with AtMega8 mcu