The Plate choke of TL-922A
Why this plate choke arced? My guess is that the voltage difference between the coil surface and the tip of the output capacitor exceeds the breakdown strength of the air (between the surface and the tip) at the moment. I will later add a silicon insulator at the tip of the output cap.
Why this plate choke arced? My guess is that the voltage difference between the coil surface and the tip of the output capacitor exceeds the breakdown strength of the air (between the surface and the tip) at the moment. I will later add a silicon insulator at the tip of the output cap.
The coil diameter is about 0.33~0.35 mm.
I bought some enameled wire from the local wire shop on Saturday morning. Then I rebuild the choke coil as shown above. I tried to make it as similar as possible with a slightly different size of enamel coated wire. No time to measure actual coil inductance. (yeah, the test gear was far far away at that time)
I put it the amplifier and, it worked for all 9 bands!!
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