Thanks for the great video! I've been fixing mistakes and problems in a diy multimeter kit from the 60's with no diagrams or directions. I'll definitely have to take your advice on labeling points and making a legend to remember what they are.
Perfect Paul, it's better than the method I use, I particularly like the legends, something I've never done, seems a good way not to forget anything , I'll adopt that from now on 73
Useful video; thank you. Other folks may have already noted this in the comments, but I think it is very helpful to draw the various functions that are contained within an IC, within the IC symbol. For a 555, the resistor divider, comparator, etc. This makes the operations of the circuit more apparent.
It helps, when dealing with ICs, if the circuit symbol reflects the true pin out of the package. Some manufactures insist in making their circuit symbols incomprehensible, refusing to make them in the image of the package Even when dealing with MSI logic gates, it can help if the gate symbols are drawn within the package outline, with the pin out clearly marked. This is important both when fault finding, and when planning the layout for the associated PCB. In the latter case in makes it easier to make use of the gate position in the package to simplify the PCB layout for connections between gates in the same package. For simple circuits, it is common practice to place the supply rails at the top and bottom of the circuit diagram, and draw the component conections in between these rails. This drawing style is very common for designs that only include active devices with three terminals, such as BJTs, FETs and MOSFETs, for example in RF circuits. For circuits that use multi pin devices, such as LSI,MSI ICs. It simplifies the circuit diagram layout if the supply symbols for rail and zero volt rails are just shown connected to the ICs rail connections, maybe with the local supply decoupling capacitor. Areas of circuit that use a lot of discrete components, transistors etc, can be drawn grouped together with the rails shown as in this video, with I/o indicated with named connection symbols. This style of drawing works well for large and complex circuits, where drawing all the rail and connection as lines would just create a horrible mess of crossing lines. For home drawn circuits, there are a number of tricks to making them easy to read. Wires that join are usually indicated with a dot at the junction point. Lines that cross over each other, can be clearly indicated with a hump back symbol, where one wire crosses over another. ( In commercial computer drawn circuits, usually only the dot is used, and wires are allowed to cross at right angles without a connection bridge symbol being shown, this is because the dot can be made to clearly indicate a joint between wires.) The above convention leads to a golden rule of only drawing wire in the X-Y direction, avoiding wires drawn at an odd angles. This produces another rule of avoiding four point cross over connections. That is where four wires join together at 90 degrees, in a cross patten with a dot symbol at the centre of the cross. Personally, I find the IEC standard circuit symbols for gates and clocked registers to be far too complicated to be clear, as all of these symbols look very similar, drawn as rectangular boxes. The rules for the IEC symbols are extremely logical, (no pun intended), but they were designed by a committee and are therefore unusable. The US symbols for gates, nand, and, or, nor, and xor are far easier to quickly read. The above style is often implemented in PLD and FPGA development tools that allow a modular circuit diagram representation of the underlying VHDL code.
Thanks I enjoyed the video. There’s a lot of great information. I need to go back and review your on going from schematic to bread board. Do you have videos on how breakdown and read schematics?
very nice video...:D do you use freecad and kicad for circuit-board design then send the gerber file off to some pcb factory? thanks a lot...:) i am trying to learn cad-electronics
Excellent video dude.
For some people the ads are like the holy grail of YT.
If they keep this channel alive then long live you and the channel
Thanks for the great video! I've been fixing mistakes and problems in a diy multimeter kit from the 60's with no diagrams or directions. I'll definitely have to take your advice on labeling points and making a legend to remember what they are.
Perfect Paul, it's better than the method I use, I particularly like the legends, something I've never done, seems a good way not to forget anything , I'll adopt that from now on 73
Useful video; thank you. Other folks may have already noted this in the comments, but I think it is very helpful to draw the various functions that are contained within an IC, within the IC symbol. For a 555, the resistor divider, comparator, etc. This makes the operations of the circuit more apparent.
Great job breaking it out step by step.
Thanks Paul ☮☮☮
Thanks, another gem. What a great idea the way you make your notes.
You should make a beginner series that starts from the absolute basics.
Basic electricity and electronics playlist
@@learnelectronics is that another channel? I don't understand
I love your channel. You’re a really cool dude, doing really cool things. 😎
Great explanations, really appreciate it.
Great starter video, keep these types of "tutorial" videos coming please!
Reverse engineering is part of my job but not in the job description. Brilliant method!
Thanks buddy!
Your Basics are Great...
It helps, when dealing with ICs, if the circuit symbol reflects the true pin out of the package. Some manufactures insist in making their circuit symbols incomprehensible, refusing to make them in the image of the package Even when dealing with MSI logic gates, it can help if the gate symbols are drawn within the package outline, with the pin out clearly marked. This is important both when fault finding, and when planning the layout for the associated PCB. In the latter case in makes it easier to make use of the gate position in the package to simplify the PCB layout for connections between gates in the same package.
For simple circuits, it is common practice to place the supply rails at the top and bottom of the circuit diagram, and draw the component conections in between these rails. This drawing style is very common for designs that only include active devices with three terminals, such as BJTs, FETs and MOSFETs, for example in RF circuits.
For circuits that use multi pin devices, such as LSI,MSI ICs. It simplifies the circuit diagram layout if the supply symbols for rail and zero volt rails are just shown connected to the ICs rail connections, maybe with the local supply decoupling capacitor. Areas of circuit that use a lot of discrete components, transistors etc, can be drawn grouped together with the rails shown as in this video, with I/o indicated with named connection symbols.
This style of drawing works well for large and complex circuits, where drawing all the rail and connection as lines would just create a horrible mess of crossing lines.
For home drawn circuits, there are a number of tricks to making them easy to read. Wires that join are usually indicated with a dot at the junction point. Lines that cross over each other, can be clearly indicated with a hump back symbol, where one wire crosses over another. ( In commercial computer drawn circuits, usually only the dot is used, and wires are allowed to cross at right angles without a connection bridge symbol being shown, this is because the dot can be made to clearly indicate a joint between wires.)
The above convention leads to a golden rule of only drawing wire in the X-Y direction, avoiding wires drawn at an odd angles. This produces another rule of avoiding four point cross over connections. That is where four wires join together at 90 degrees, in a cross patten with a dot symbol at the centre of the cross.
Personally, I find the IEC standard circuit symbols for gates and clocked registers to be far too complicated to be clear, as all of these symbols look very similar, drawn as rectangular boxes. The rules for the IEC symbols are extremely logical, (no pun intended), but they were designed by a committee and are therefore unusable. The US symbols for gates, nand, and, or, nor, and xor are far easier to quickly read.
The above style is often implemented in PLD and FPGA development tools that allow a modular circuit diagram representation of the underlying VHDL code.
Just very well Master.
Thanks a lot.
FR.
Awesome video man.👍👍
Great starter video!
can you show me how to make a pcb board traditionally with copper and then how to make one using Kcad to make a real pcb?
Thanks I enjoyed the video. There’s a lot of great information. I need to go back and review your on going from schematic to bread board. Do you have videos on how breakdown and read schematics?
very nice video...:D do you use freecad and kicad for circuit-board design then send the gerber file off to some pcb factory? thanks a lot...:) i am trying to learn cad-electronics
I use Easyeda
great vid as usual!
Thanks
Cool video, take care mate.
It will just be one more commercial I have to click through. No biggie.
Agreed. Don’t be too bummed about needing to do the ads man. We know you’d rather not but you do what you gotta do.
hey 555 guy
👍👍