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.
Before I purchase the parts, could someone just check that I have everything correct.
2 x diodes
1 x 10k resistor
1 x 82k resistor
1 x 100k resistor
1 x 555 timer
1 x 22uF capacitor (polarised)
2 x 10nF capacitors (non polarised)
1 x 12v relay
1 x NPN transistor (such as a 2N2903)...
ya, sorry, I did mean closed, not open and I intended to run the relay from a seperate power source (12 volts) as the timer works off of 3 volts.
Thanks for your helps, I will buy the components recomended and see if I can get it working. Thanks a lot for your help and I will post more work...
The kitchen timer I am talking about is the small cheap battery operated type, but I don't have access to an oscilloscope.
I am (just about) adept enough to work out the scr (ahhh google you saved me again). If it does give off 1.5 volts, is this enough to switch a relay (I can't seem to find...
Hi all, and thanks in advance for reading and for any assistance offered.
I am fairly new to electronics and have built a few circuits from schematics recently, and am now looking to try some things that I would use for my airsoft site (skirmish) in the UK.
The 1st one is as follows :-...
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