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661: Difference between revisions
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→Power Supply
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The other supply voltages use the +300 V supply as their reference. The +19 V and -19 V supplies use BJT-based regulators. | The other supply voltages use the +300 V supply as their reference. The +19 V and -19 V supplies use BJT-based regulators. | ||
The other regulators are tube-based. | The other regulators are tube-based. | ||
The 661 has a 137°F/58 °C [[thermal cutoff]]. In practice, it doesn't run hot. | |||
=== Indicator === | === Indicator === | ||