XOR and KYB power supply - help please
Hi all.
I'm quite a newbie at electronics. I bought a Fairchild 74HC86 quad XOR gate and built a circuit as seen in the picture.
For the power supply I use the same power supply as the standard PC kyb uses (I disassembled it and connected it to the computer) Vcc=4,78V.
The circuit doesn't seem to work though. I've tried several things, and if i connect Vcc to pins 9 ans 10 the LED shines up, but after I break disconnect pin 9 or 10 the LED shines for about 1/2 a second before going off.
Could there be a problem with the input current - from the KYB? It seems as if the chip is leaking????![Frown :( :(](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Hi all.
I'm quite a newbie at electronics. I bought a Fairchild 74HC86 quad XOR gate and built a circuit as seen in the picture.
For the power supply I use the same power supply as the standard PC kyb uses (I disassembled it and connected it to the computer) Vcc=4,78V.
The circuit doesn't seem to work though. I've tried several things, and if i connect Vcc to pins 9 ans 10 the LED shines up, but after I break disconnect pin 9 or 10 the LED shines for about 1/2 a second before going off.
Could there be a problem with the input current - from the KYB? It seems as if the chip is leaking????
Attachments
Last edited: