Hello there,
I need help with this simple circuit which i am going to explain it for you what i am doing here.
Part 1 is a simple delay On timer circuit driving a relay.
Part 3 is a simple LED flashing circuit which flashes two LEDs so no big deal here too.
But i need some thing in between in Part 2 where the question mark (?) is to achieve the following.
1. When Main switch is closed it'll create a delay of some time before relay turns on in Part 1.
2. When relay is turned on in part 1 it'll power the circuit in Part 2 whose responsibility should be to turn on Part 3 for only 10 seconds and then turn Part 3 off as long as the main switch is not closed and circuit is receiving power.
In simple words i need part 3 to start flashing two LEDs with a delay set by part 1 when main switched is closed and Part 3 should Flash the LEDs for only 10 or more seconds before turning off completely
Now i can't find a way to do it by the use of as little components as possible and with only transistors resistors and capacitors and no 555 or any other ICs to achieve this in part 2.
So please help.
I need help with this simple circuit which i am going to explain it for you what i am doing here.
Part 1 is a simple delay On timer circuit driving a relay.
Part 3 is a simple LED flashing circuit which flashes two LEDs so no big deal here too.
But i need some thing in between in Part 2 where the question mark (?) is to achieve the following.
1. When Main switch is closed it'll create a delay of some time before relay turns on in Part 1.
2. When relay is turned on in part 1 it'll power the circuit in Part 2 whose responsibility should be to turn on Part 3 for only 10 seconds and then turn Part 3 off as long as the main switch is not closed and circuit is receiving power.
In simple words i need part 3 to start flashing two LEDs with a delay set by part 1 when main switched is closed and Part 3 should Flash the LEDs for only 10 or more seconds before turning off completely
Now i can't find a way to do it by the use of as little components as possible and with only transistors resistors and capacitors and no 555 or any other ICs to achieve this in part 2.
So please help.
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