I like the design for the PM6666 ocxo and would like to ask if you have a PCB leftover ( if gerber files are available I would very much appreciate it !) ? br Erik from Denmark
good job . I recommend you add to the v reg circuit add a bypass diode between the VIN and VOUT terminals of the reg (reverse-current bypass diode) This is standard in Liner Voltage Regulators design
Thanks for the suggestion. The main power supply uses a switching regulator module. The other "power supply" is a voltage reference, and as such it should not see any reverse current. Which regulator were you thinking about? But you are right, when dealing with LDOs, adding a reverse-current bypass diode is good practice!
@@the_bootloader I usually use LDO of Linar Technology current source based example LT3083 LT3042 But this method is most useful for Basic V REG 78XX I use low noise LDOs Because I build a lot of V REF circuits Linar Technology makes the best regulator there is
Thanks ! I have a few spare boards, but shipping outside of the USA is prohibitively expensive. If you are in the USA however and would like one, feel free to send me a message. I also have an assembled unit for sale.
Good idea on using the voltage reference. I have a PM6665 in the light grey case. I have the same VCXO too but always wanted to build a GPSDO with it. The results you got are impressive, but what 10MHz GPSDO are you using?
Thanks ! I am using a GPSDO from a GSM base station. It has its own OCXO. I plan to make a video about it sometime in the future, but in the meantime let me know if you have questions. Also I have some PCB boards left, if you are in the US and want to make your own OCXO using my design, let me know
I like the design for the PM6666 ocxo and would like to ask if you have a PCB leftover ( if gerber files are available I would very much appreciate it !) ? br Erik from Denmark
good job .
I recommend you add to the v reg circuit
add a bypass diode between the VIN and VOUT terminals of the reg
(reverse-current bypass diode)
This is standard in Liner Voltage Regulators design
Thanks for the suggestion. The main power supply uses a switching regulator module. The other "power supply" is a voltage reference, and as such it should not see any reverse current. Which regulator were you thinking about?
But you are right, when dealing with LDOs, adding a reverse-current bypass diode is good practice!
@@the_bootloader I usually use LDO
of Linar Technology
current source based
example
LT3083
LT3042
But this method is most useful for Basic V REG
78XX
I use low noise LDOs
Because I build a lot of V REF circuits
Linar Technology makes the best regulator there is
Both videos were informative. Thanks for sharing!
Very nice work, I'll have to do this upgrade to my PM6669
Thanks ! I have a few spare boards, but shipping outside of the USA is prohibitively expensive. If you are in the USA however and would like one, feel free to send me a message. I also have an assembled unit for sale.
Very nice post. I've already sent an order.
Very nice video! What kind of BNC cable is this? Did you make it yourself? And where can I find the eagle file? Thanks!
Good idea on using the voltage reference. I have a PM6665 in the light grey case. I have the same VCXO too but always wanted to build a GPSDO with it. The results you got are impressive, but what 10MHz GPSDO are you using?
Thanks ! I am using a GPSDO from a GSM base station. It has its own OCXO. I plan to make a video about it sometime in the future, but in the meantime let me know if you have questions. Also I have some PCB boards left, if you are in the US and want to make your own OCXO using my design, let me know
@@the_bootloader I may be interested.I need a second OCXO, but I might get some spares. Let me know about your boards.
Hello. I'v also designed time base for counter JDS6600.
If you have any boards left please contact me I would like to purchase one. Thanks!