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Updated: May 17, 2025
The filament voltmeter is connected across the filament secondary coil terminals, while the plate milli-ammeter is connected to the mid-taps of the plate secondary coil and the filament secondary coil. A 200 to 500 Mile C. W. Telegraph Transmitting Set.
You will observe: that the terminals of the power transformer secondary coil which develops 10 volts are connected to the filaments of the oscillator tubes; that the terminals of the other secondary coil which develops 10 volts are connected with the filaments of the rectifier tubes; that the terminals of the third secondary coil which develops 550 volts are connected with the plates of the rectifier tubes; that the pair of filter condensers are connected in parallel and these are connected to the mid-taps of the two filament secondary coils; that the reactance coil and the third filter condenser are connected together in series and these are shunted across the filter condensers, which are in parallel; and, finally, a lead connects the mid-tap of the 550-volt secondary coil of the power transformer with the connection between the reactor and the third filter condenser.
The filament voltmeter is connected across the filament secondary coil terminals, while the plate milli-ammeter is connected to the mid-taps of the plate secondary coil and the filament secondary coil. A 200 to 500 Mile C. W. Telegraph Transmitting Set.
You will observe: that the terminals of the power transformer secondary coil which develops 10 volts are connected to the filaments of the oscillator tubes; that the terminals of the other secondary coil which develops 10 volts are connected with the filaments of the rectifier tubes; that the terminals of the third secondary coil which develops 550 volts are connected with the plates of the rectifier tubes; that the pair of filter condensers are connected in parallel and these are connected to the mid-taps of the two filament secondary coils; that the reactance coil and the third filter condenser are connected together in series and these are shunted across the filter condensers, which are in parallel; and, finally, a lead connects the mid-tap of the 550-volt secondary coil of the power transformer with the connection between the reactor and the third filter condenser.
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