Hi All,
I am trrying to design a blocking oscillator. I have a transformer that has a primary about 15 Turns and a secondary with about 500 turns. The secondary has a center tap at 10 turns that could be used for feedback.
The circuit that I tried is shown in the attachment. It work fine if I do not connect the secondary to any load, but the moment I add a bridge rectifier to the secondary, the oscillations stop and the transistor gets really hot. can someone help me with what I am doing wrong?
I guess maybe I need a transformer with an independent feedback winding? I was hoping I could use the transformer I have with a tapped secondary.
In the schematic P$4 & P$2 were the places where I was attaching the bridge rectifier (1n4004 diodes in a full wave bridge)
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I am trrying to design a blocking oscillator. I have a transformer that has a primary about 15 Turns and a secondary with about 500 turns. The secondary has a center tap at 10 turns that could be used for feedback.
The circuit that I tried is shown in the attachment. It work fine if I do not connect the secondary to any load, but the moment I add a bridge rectifier to the secondary, the oscillations stop and the transistor gets really hot. can someone help me with what I am doing wrong?
I guess maybe I need a transformer with an independent feedback winding? I was hoping I could use the transformer I have with a tapped secondary.
In the schematic P$4 & P$2 were the places where I was attaching the bridge rectifier (1n4004 diodes in a full wave bridge)
[/img]