Various aspects of home brew inverters

Author	Message
Tinker Guru Joined: 07/11/2007 Location: Australia Posts: 1904	Posted: 08:20am 09 Jul 2018         Warpspeed said   Its getting late here now, but tomorrow I will give the multimeter method a try. We are not that far above 50Hz, so just about any multimeter should work quite well for this method. Today's results: 1st column = 0.47//0.33uF 2nd = 0.47//0.47uF. It appears the forum deletes the spaces I left between the columns, I hope you can make it out. I deliberately set the amplitude below 2 Volt as that gave me 1.000 accuracy. 40Hz 1.847V 1.885V 50Hz 1.922 1.939 55Hz 1.936 1.939 60Hz 1.946 1.946 65Hz 1.952 1.948 70Hz 1.955 1.947 75Hz 1.956 1.942 80Hz 1.953 1.936 85Hz 1.949 1.936 90Hz 1.943 1.916 100Hz 1.927 1.888 120Hz 1.883 1.823 150Hz 1.794 1.705 180Hz 1.692 1.579 I also did this test with 1uF & 2uF capacitors. 1uF had the peak at 65Hz, 2uF below 40Hz. Klaus