Greetings Everyone,
A rugged RF load - Dummy Load was tested in our RnD lab. Normally we use 20 No.s of 1K Resistors in parallel to make the RF load, it gets extremely hot while testing. In this circuit we are using a attenuator type of arrangement to equally dissipate the power. Resistors used is 2 watts rating but suspiciously seems to be 1 watt only. Circuit is given below:
TEST RESULTS:
Tested the RF dummy load with 33 Volt D.C. at 600 mA Current for 1 hour. The resistor value changes from 49.7 to 48.9 which is really good in performance.
The picture below is the one before etching:
A rugged RF load - Dummy Load was tested in our RnD lab. Normally we use 20 No.s of 1K Resistors in parallel to make the RF load, it gets extremely hot while testing. In this circuit we are using a attenuator type of arrangement to equally dissipate the power. Resistors used is 2 watts rating but suspiciously seems to be 1 watt only. Circuit is given below:
TEST RESULTS:
Tested the RF dummy load with 33 Volt D.C. at 600 mA Current for 1 hour. The resistor value changes from 49.7 to 48.9 which is really good in performance.
The picture below is the one before etching:
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