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Hi
Circuit works well ,,well after a bit of pot twiddlingand putting a sound generator at the relay contacts coz I kept missing the on period (opps)
Many thanks but now I'd like to ask what would you increase in value to say make to timer off for 30 mins aprox but keeping the same on period and is your diagram generator bought or a free download.
Thanks steve
Concentrating on the schematic in post #25 & reference the 555 are the components about right for a 1sec (aprox) on period and 30 mins (aprox) period.
Also if I change the transistor will the diodes and 1k resistor be ok to power a transistor ,, the only transistors i have here are
BC547 ,, umm only 100mA
2N3053 ,, dont need
BC337 ,, bit smaller ,, is this ok
Reason for asking, I cant get out till the end of the week and as to the "other" circuit 2moro would be brilliant
Many thanks for the helpand putting up with my daft mistakes
Steve
Hi Eric
Its maplins sealed reed relay 12v P/N JH16S , resistance 1050 ohms 11.4mA
Steve