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661: Difference between revisions
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The +19 V and -19 V supplies use BJT-based regulators. | The +19 V and -19 V supplies use BJT-based regulators. | ||
The other regulators are tube-based. | The other regulators are tube-based. | ||
A 45 second delay tube is used so that plate voltage isn't applied to any tube in the 661 | |||
until the cathodes are hot. | |||
The 661 has a 137°F/58 °C [[thermal cutoff]]. | The 661 has a 137°F/58 °C [[thermal cutoff]]. | ||
In practice, it doesn't run hot. | In practice, it doesn't run hot. | ||