I am an electronics dummy who needs to build a square wave generator.
I have a schematic that I think I can build BUT there are 2 components that I can't identify, so can't buy.
One is a triangle symbol (LM741) that has pins (?) nubered 2,3,4,6,7. (no 1 or 5) This is part of a throttle array that feeds into pin 5 of (NE555).
The other is shown as a circle with 2 parallel lines, one shorter. The short line receives a pulse wave from a mosfet (TC4420CPA) pin #6. The long line shows a wire leading from each end. One goes to an electrode and the other to a ground. Near this circle I see (ifrs 10) or maybe that's (1frs 10) and beneath this (tr 3). There is a number 5 near the circle and the word mosfet.
The guys at the electronics supply house couldn't identify this item.
Any and all help greatly appreciated.
I have a schematic that I think I can build BUT there are 2 components that I can't identify, so can't buy.
One is a triangle symbol (LM741) that has pins (?) nubered 2,3,4,6,7. (no 1 or 5) This is part of a throttle array that feeds into pin 5 of (NE555).
The other is shown as a circle with 2 parallel lines, one shorter. The short line receives a pulse wave from a mosfet (TC4420CPA) pin #6. The long line shows a wire leading from each end. One goes to an electrode and the other to a ground. Near this circle I see (ifrs 10) or maybe that's (1frs 10) and beneath this (tr 3). There is a number 5 near the circle and the word mosfet.
The guys at the electronics supply house couldn't identify this item.
Any and all help greatly appreciated.