HiAnyone got a spare 50hz light for adjusting turntable speed please?
Thanks!
Thanks, seen that and that's the backupThat's what I bought. Works well.
Possibly more accurate than the Nobsound light. In the past you could enter you address and get a real time reading of ones voltage and frequency not sure if still available.National Grid is obliged by its licence commitments to control the frequency within ±1% of 50Hz so it can fluctuate between 49.5Hz to 50.5Hz. However the normal operational limits are 49.8Hz to 50.2Hz.
Thanks I will try it laterhttps://play.google.com/store/apps/details?id=com.AM.AM.RPMSpeed
I looked on the Google play store....this actually works .....run the app ...put your phone on the platter up against the spindle press start on the app ...then start your deck running .....crazy. !
It agrees with the strobe on the Techie ....
Does this mean using a lamp with filament bulb might not work?National Grid is obliged by its licence commitments to control the frequency within ±1% of 50Hz so it can fluctuate between 49.5Hz to 50.5Hz. However the normal operational limits are 49.8Hz to 50.2
I know David, also a good option!!
An old fash light bulb will work .....that's what I've done for years on decks without built in strobe lamps .. with that I mean "we've" done for years....old scotes ....Does this mean using a lamp with filament bulb might not work?
This has worked a treat, thank you!!!!https://play.google.com/store/apps/details?id=com.AM.AM.RPMSpeed
I looked on the Google play store....this actually works .....run the app ...put your phone on the platter up against the spindle press start on the app ...then start your deck running .....crazy. !
It agrees with the strobe on the Techie ....
But the beauty of mains power is it will show correctly, surely. No-one can hear 0.1% and I can’t think of many pitch-adjustable non-quartz decks.As I see it, the problem with using a mains powered strobe is that as the mains freq changes, the motor speed could change at the same rate, so a mains operated strobe **may** always show as correct, on the other hand, a battery operated, crystal controlled, handheld strobe will always be exceptionally accurate, regardless of mains freq.... The eBay unit listed above is mine, just for clarity....
As I see it, the problem with using a mains powered strobe is that as the mains freq changes, the motor speed could change at the same rate, so a mains operated strobe **may** always show as correct, on the other hand, a battery operated, crystal controlled, handheld strobe will always be exceptionally accurate, regardless of mains freq.... The eBay unit listed above is mine, just for clarity...