I can't tell from the pics; is your circuit assembled on perforated-only board or on perforated board having copper strips?
hi alec.
Its isolated copper doughnuts, I avoid using it.
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I can't tell from the pics; is your circuit assembled on perforated-only board or on perforated board having copper strips?
I would, too. I've never come across it (I lead a sheltered life!). Seems neither flesh nor fowl.Its isolated copper doughnuts, I avoid using it.
A circuit diagram is just a 'map': it is not intended to give all the details (e.g. a parts list, assembly instructions) needed to build a project.I am using 2 IC because this is there in circuit diagram
See my comment above about the purpose of a circuit diagram....and then ground them !No I have not grounded all unused Inputs pins because this is not mentioned in circuit diagram
friend please send a circuit from where which I can make from 1 IC.
because I am new in electronic and doesn't have better knowledge...
please ....
thanks in advance
ok friend I love you......... thanks for helping me but will this circuit solve the corrosion problem as the electrodes will be in water...
Yes! I've used versions of this circuit concept very successfully with no corrosion of the electrodes. I used stainless steel TIG welding rod for the electrodes. I silver solder/brazed a 1/4" inch area at the top of each electrode so I could use electrical solder to attach the probe wires.
Be aware that Eric's PCB layout and Alec's circuit schematic are not the same. Eric's is an exact layout for the original circuit you posted...with the opto-coupler. Alec's used the extra gates in the IC to drive an LED.
Maybe Eric can modify his to use an LED instead.
Ken
Because I was lazy. The circuit was designed using LTSpice and those are the names given automatically by the program!why didn't you stick to the common name given to ICs with multiple logic gates?