Electrical – Simulation for Wireless Power Transfer works fine, Prototype on breadboard doesn’t

inverterwireless-charging

I am working on a Solar Powered Wireless Power Transfer project. The simulation for the circuit I am working off of works really well.

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I have built this design and others on a breadboard but I am getting a DC output across the inductors. I am unsure as to why it isn't outputting correctly.

Any help would be appreciated.

Best Answer

If the circuit does not start oscillation will break transistors because the base is polarized and the collector is shorted to + . You should place a current limit resistor in series to positive of about 50 ohms and verify if oscillator starts. Assuming hfe about 300 with a base 47 k resistor the collector current could be about 50 mA and this could destroy quickly the 2222. What shows the oscilloscope connected to BE of 2222? Eventually verify connections of your 2222 with an ohmmeter connected to test diodes and / or hfe .