I believe it has to do with reducing low frequency noise on the 8 volt line.
The addition of the capacitor was mentioned by Eric at the FDIM when the K3S was introduced.
The new synthesizers made that lower frequency operation possible, and I assume that during testing, the noise was noticed.
73, Don W3FPR On 6/23/2017 7:38 PM, Fred Jensen wrote:
OK Don, I'll bite: What does a "220uF Solid Polymer Electrolytic Capacitor on the output of the 8 volt regulator" have to do with an "extension of the K3 tuning range to 100 KHz?" Voltage regulators are usually found at the far end of the circuit from frequency determining components. Enquiring minds would like to know. [:-)
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