Tect clock output only 1.7v HELP!!

audiokid25 · 19th May 2005, 06:45 PM

Ok I purchased a tent clock XO2 from Guido. I needed a 3.3v output and he instructed me to change r21 to a 470ohm resistor. I measure 3.6 volts at the middle pin of the regulator. And Im only getting a 1.7v clock output. Any ideas here? The 1.7v isnt being seen by the chips so I cant even load a disc.

Any help would be greatly appreciated.

audiokid25 · 19th May 2005, 06:54 PM

There is 3.5v on the input of the oscillator, but only 1.7v out.

OliverD · 19th May 2005, 08:08 PM

At 50% duty cycle, the clock output "voltage" should be half the supply voltage. Remember it is switching on and off several million times per second and your meter only shows the average.

19th May 2005, 06:45 PM	#1
audiokid25 diyAudio Member Join Date: Oct 2004	Tect clock output only 1.7v HELP!! Ok I purchased a tent clock XO2 from Guido. I needed a 3.3v output and he instructed me to change r21 to a 470ohm resistor. I measure 3.6 volts at the middle pin of the regulator. And Im only getting a 1.7v clock output. Any ideas here? The 1.7v isnt being seen by the chips so I cant even load a disc. Any help would be greatly appreciated.

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19th May 2005, 06:54 PM	#2
audiokid25 diyAudio Member Join Date: Oct 2004	There is 3.5v on the input of the oscillator, but only 1.7v out.

19th May 2005, 08:08 PM	#3
OliverD diyAudio Member Join Date: Nov 2002 Location: Germany	At 50% duty cycle, the clock output "voltage" should be half the supply voltage. Remember it is switching on and off several million times per second and your meter only shows the average.

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