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[Others] Rotary encoder keyboard for Hantek PC Scope

Can you please advise on schematic available for a keyboard contaning rotary encoders. This project is for a Hantek 6254 USB PC based Scope.

answered Aug 07,2020
by Jason

0votes

4answers

854 views

[Others] How do I trigger a TIP32C PNP transistor with a 5V output signal from an NE555 IC?

I would like to know how. What voltage does the TIP32C need to make it as a solid state relay. Thanks for any help.

answered Aug 06,2020
by Gorge

0votes

2answers

722 views

[Others] Symbol fields are not in the correct place in schematic

Hi all,When I place passive symbols in a schematic the fields, they don't seem to stay where I placed them in the symbol editor and I can't seem to figure out what I'm doing wrong. Has any...

answered Aug 06,2020
by Kemio

0votes

4answers

412 views

[Others] Cooling problem---150W boost converter + 100W power LED

I have 12V 10A power supply (PC ) and I use 150W boost converter to raise voltage into 32-35 V (1,5-2A) . I added 15x10cm aluminum plate (5mm thickness , 3 cm fins) to cool LED (thermal paste added).I...