Tag Archives: CA3130

300W inverter power 24Vdc to 220Vac by MJ15003,CA3130,CD4027

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This is circuit 300W Inverter power,so input battery 24V to Output 220Vac 50Hz 300W. I used main Component IC CD4027 , NE555,CA3130 and LM7805. The transistor power MJ15003,2N3773 driver transformer 24V 10A min. The VR1 – 100K is control Frequency output at 50Hz 50Hz or 60Hz at Square wave signal…. Read more »

Check the milli-Ampere-hour capacitance of your rechargeable NiCad batteries

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Introduction With this mAh meter you can check the mAh capacitance of your NiCad or NiMH rechargeable batteries Normally the cheaper NiCad AA-type cells have a capacitance of 500-750mAh (NiCAD) the more expensive NiMH AA-cells types are up to 1800mAh. I built this circuit because the capacitance of some of… Read more »