For My Project I Want To Build A Metal Detector. I also Need To Know Where To Get These Supplies and Especilly How To Wire The Circuit. http://home.clara.net/saxons/bfo.htm [bold]Parts list Power source: Any 9v battery PP3 is ideal. Capacitors: C11= 220uF 16v electrolytic. C1,C2,C3,C4,C10= .01uF polyester or polycarbonate. C5,C6,C7,C8,C9= .1uF polyester or polycarbonate. Resistors: All resistors 1/4 watt 5% R1,R2,R3,R4,R5,R7= 10k. R8= 1K. R9= 2.2m R6,R10= 39k. Transistors: All BC 183B. Just about any small signal npn with a gain of 250+ will do Audio output: A 2.5 inch 8 ohm speaker will work but headphones or earpiece are preferable the higher the impedance the better. Many of the above parts could be salvaged from a broken transistor radio. Other Transistors will work. For example ---- 2N2222A,2N3904,2SC2240,MPS6520,MPS6512[bold/]
I t ook on a simlilar project whenever i was doing electronic, electrical and software engineering at uni. However, i never actually built it
All parts should be available or can be ordered from Radioshack. Also you can buy a metal detector from Toys R us for less than 50 dollars or Radioshack. Have fun.
