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201 circuit description

Solution
4. CIRCUIT DESCRIPTION
The RF oscillator is a Colpitts type using a silicon transistor.  The RF voltage is rectified with a diode and the current is indicated on the meter. When the dip meter frequency is in resonance with the external circuit, the meter pointer will dip.  The strength of the oscillator output is controlled with the SENSITIVITY adjuster.  When required amplitude modulation can be applied to the RF oscillator output.  A twin-T type circuit is used for the 2kHz source. In the absorption wavemeter function, the RF oscillator power is cut off and the tuned and diode-meter circuits are used.
 

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Article details
Article ID: 59
Company: MFJ
Date added: 2017-01-12 14:21:06
Views: 16

 
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