vari-cap lubrication - Printable Version

+- The PHILCO Phorum (https://philcoradio.com/phorum)
+-- Forum: Various and Sundry Categories (https://philcoradio.com/phorum/forumdisplay.php?fid=37)
+--- Forum: Other Radios (Non-Philco) (https://philcoradio.com/phorum/forumdisplay.php?fid=12)
+--- Thread: vari-cap lubrication (/showthread.php?tid=14898)

---

vari-cap lubrication - leftwing25 - 07-05-2016

Hey, guys. Wonder if someone could tell me what's the best lube to use on vari-cap bearings. Got one here that's really scratchy. Thanks, Ed

---

RE: vari-cap lubrication - morzh - 07-05-2016

Anything used for ball bearings in bikes is good.
lithium grease is good.

---

RE: vari-cap lubrication - leftwing25 - 07-05-2016

Thanks, Mike. Have some lithium grease, so that's what I'll use. Ed

---

RE: vari-cap lubrication - morzh - 07-06-2016

Just so you know.....a "varicap" is a whole another animal although in today's radios used for exact same purpose as the variable capacitor. It is in fact a diode with the PN junction capacitance controlled by the applied voltage.

https://en.wikipedia.org/wiki/Varicap

---

RE: vari-cap lubrication - leftwing25 - 07-06-2016

Now that you mention it, I seem to remember reading about those things years ago somewhere being used in PLL systems in transceivers. Interesting piece there about how they work. Thanks for posting it. I'll just call them tuning caps to avoid the confusion.Thanks, Ed

---