Various aspects of home brew inverters

Author	Message
wiseguy Guru Joined: 21/06/2018 Location: Australia Posts: 1225	Posted: 10:40pm 12 Feb 2019         nickskethisniks said   Hi wiseguy, make sure you your opto's can be driven in reverse! Thanks Nick I suddenly got worried - some optos uses a pseudo diode (electronic coupling using inductors or capacitors) for bridging signals across the isolation barrier and these may not like reverse potential. I re-checked the data sheet for the TLP152 I will use, it is a standard type opto with a reverse capability of 5V so it is OK.   tiny said   The way I remember, signal SCR_SD_N is input to nano1 and nano2. It is output from the SCR (Q6) thru a 1K resistor (r27). It becomes high when the SCR conducts. It now depends on poida's codes how nano1 and nano2 handles it. Hi TinyT - your memory is fully functional.... I looked at that schematic many times I saw the SCR_SD but missed the flag just under it to the right of R27 - thank you! If at first you dont succeed, I suggest you avoid sky diving.... Cheers Mike