I build radio transmitters and sometimes the input relay is different then the output relay. this is because of the amount of power going out is much larger then the power coming in. Both relays are being triggered by an RF keying circuit which creates the ground for the two relays thru a transistor.
could use some help getting the input relay to key last so that all the power does not jump across the output relay before in makes contact. the two relay coils are in parallel. both are open frame type relays
could use some help getting the input relay to key last so that all the power does not jump across the output relay before in makes contact. the two relay coils are in parallel. both are open frame type relays