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==Power Supply== | ==Power Supply== | ||
The 321 uses a DC-DC converter to generate the DC voltages needed for the scope. | The 321 uses a DC-DC converter to generate the DC voltages needed for the scope. | ||
Prior to serial number 720, 321s used the [[120-153]] transformer along with a separate high voltage power supply with its own transformer | |||
the +3350 V CRT anode voltage. | |||
Starting at serial number 720, all DC voltages (including the CRT anode voltage, via a voltage multiplier) are generated by a single power supply | Starting at serial number 720, all DC voltages (including the CRT anode voltage, via a voltage multiplier) are generated by a single power supply | ||
based on the [[120-210]] transformer. | based on the [[120-210]] transformer. |