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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.
i am in search of a cheap timer to opperate a mosquito repelent device.a cyclic on off timer without transformer .the timing should be 15min -30 min mode .no micro controller stuff .if it is a cmos 4000 series good.
The 4521BE is a 24 stage counter with oscillator, just add the necessary R and C. It won't drive a relay so you will need a transistor driver. The power required is low enuf that you can just rectify the 60 Hz and use a resistive divider to get 12 VDC.
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