Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
If you want to use k7elp60's circuit, change the 620 ohm resistor to 1k. The 620 ohm resistor biases the base at about 660mv - too low to allow the transistor to saturate.
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