Help with simple circuit to operate a solenoid

[tomasmendes]

Hello. I need to build a circuit to do as follows:

press switch ( ie press and release)
*** initiate cycle
1) apply 6v momentarily to operate / drive a solenoid to one side
2) time delay for say 15 to 30sec
3) apply 6v momentarily in reverse polarity (ie + - to -+) to drive solenoid back.....
*** end cycle
4) ready for the next cycle


I would much appreciate an easy to understand and build diagram.

 

[pranam77]

Hello. I need to build a circuit to do as follows:
press switch ( ie press and release)
*** initiate cycle
1) apply 6v momentarily to operate / drive a solenoid to one side
2) time delay for say 15 to 30sec
3) apply 6v momentarily in reverse polarity (ie + - to -+) to drive solenoid back..... *** end cycle
4) ready for the next cycle
I would much appreciate an easy to understand and build diagram.

With the given specs, the circuit will natually be a bit complicated either with Ic's or microcontrollers. Any ways, 555 timer may be put here in use with time settings required. But reversing the polarity will require a H bridge or a small relay. Cheers

 

[tomasmendes]

Thanks for info... I need a bit more info like a diagram in order to build the module.....

A board layout (easy to understadn sketch) and components that I need to get !!! would that be possible at all ?
much apreciate it
cheers Tomas

 

[boseji]

Hello. I need to build a circuit to do as follows:

press switch ( ie press and release)
*** initiate cycle
1) apply 6v momentarily to operate / drive a solenoid to one side
2) time delay for say 15 to 30sec
3) apply 6v momentarily in reverse polarity (ie + - to -+) to drive solenoid back.....
*** end cycle
4) ready for the next cycle


I would much appreciate an easy to understand and build diagram.

Hello,

The simplest technique to achieve this operation is the use of a Dual Pole Dual Throw relay.
The Connection would be :
NO1=Supply + NO2= Supply -
CN1=Motor + CN2=Motor -
NC1=Supply - NC2=Supply +

Here NO - Normally open Terminal; NC- Normally Connected Terminal; CN- Connect Terminal in the DPDT Relay.

Control Relay Current would flow through its terminals would be:
OFF => NC2(Supply +)->CN2(Motor -) {+} CN1(Motor +)->NC1(Supply -)
Possibly Direction would be Anti-Clockwise
ON => NO1(Supply +)->CN1(Motor +) {+} CN2(Motor -)->NO2(Supply -)
Possibly Direction would be Clockwise

So a simple Relay can do your alternating.
Next to make the Timing circuit you can use a 555 Timer and clock a CD4017 chip this would divide the incoming slow clock in 555 by 10 using the decade counter and then you can use the output of the Decade counter to the Relay Driver ULN2803/2003 and drive the DPDT relay.

In case you need further details, send me a PM.

Warm Regards,
Boseji
https://m8051.blogspot.com