itzikhaim
Advanced Member level 4
Hello.
I have a project which is to design a system for RF switching.
The control of the switching should be done automatically using a control interface via a PC program.
The RF switch is a simple SPDT (Single Pole Double Through; known is 1 to 2 relay) which deliver an RF power to the appropriate state (Common port to port 1 or port 2).
When trying to design the system for that I noticed for few types of Relays/Switches one of them and the most wide used is the regular relay which have Power input terminals of 28V – the control is done when closing a 28V voltage between a Common and a chosen terminal (say no. 2) so the actuator will be closed and to pass the RF into path no. 2 – while there are other type which have instead of 28V input a TTL (5V) control inputs which activate the correspondence actuator but using a simple logic driver – the former type of relays are more common in more in-stock the later one.
My question is, even though I prefer using the simple TTL type for the Relays (using a readymade controller board with integrated I/O pins for simple control over software) – what would be a recommended relay + current driver if we will work in the non-TTL type relay and will try to control the 28V from a PC?
I have a project which is to design a system for RF switching.
The control of the switching should be done automatically using a control interface via a PC program.
The RF switch is a simple SPDT (Single Pole Double Through; known is 1 to 2 relay) which deliver an RF power to the appropriate state (Common port to port 1 or port 2).
When trying to design the system for that I noticed for few types of Relays/Switches one of them and the most wide used is the regular relay which have Power input terminals of 28V – the control is done when closing a 28V voltage between a Common and a chosen terminal (say no. 2) so the actuator will be closed and to pass the RF into path no. 2 – while there are other type which have instead of 28V input a TTL (5V) control inputs which activate the correspondence actuator but using a simple logic driver – the former type of relays are more common in more in-stock the later one.
My question is, even though I prefer using the simple TTL type for the Relays (using a readymade controller board with integrated I/O pins for simple control over software) – what would be a recommended relay + current driver if we will work in the non-TTL type relay and will try to control the 28V from a PC?