A solid-state relay (SSR) is an electronic switching device that switches on or off when a small external voltage is applied across its control terminals. Packaged solid-state relays use power semiconductor devices such as thyristors and transistors.
Here are some SSR videos worth to watch:
What is a Solid State Relay?
https://www.youtube.com/watch?
Solid State Relay || DIY or Buy
https://www.youtube.com/watch?
DIY SOLID STATE RELAY
https://www.youtube.com/watch?
Teardown of an eBay 25A Solid State Relay. (SSR)
https://www.youtube.com/watch?
25A Solid State Relay. (SSR modification 30amp to 50amp )
https://www.youtube.com/watch?
Crydom TechLab 1 – How to perform an operational on-off test on a solid state relay
https://www.youtube.com/watch?
Why Solid State Relays Fail
https://www.youtube.com/watch?
DC Solid State Relay Problem Explained
https://www.youtube.com/watch?
Electronically controlled LED lamps glowing when off.
https://www.youtube.com/watch?
4 Comments
Tomi Engdahl says:
Solid State Relay (SSR) – Types of SSR Relays – Construction & Operation
https://www.electricaltechnology.org/2019/01/solid-state-relay-types-of-ssr-relays.html
Tomi Engdahl says:
How Solid State Relays Work | Testing Solid State Relay with Multimeter | Solid State Relay Wiring
https://www.youtube.com/watch?v=J0vi5TqqCyw
Tomi Engdahl says:
TIDA-050059
Overcurrent and overtemperature protection for solid-state relays reference design
https://www.ti.com/tool/TIDA-050059?HQS=null-null-hv-hvisolation_tida050059-asset-rd-electronicdesign_psfi_isolation_l2-wwe_awr&DCM=yes&dclid=CJyF1Pfr6oEDFQ9IHgId6sYPPA
This reference design shows how to achieve overcurrent and overtemperature protection for a solid-state relay. The reference design features the TPSI3050-Q1 5-kVRMS reinforced isolated switch driver. TPSI3050-Q1 device integrates a laminate transformer to achieve isolation while transferring signal and power to the secondary side. This removes the need for any isolated bias supply. In addition, the TPSI3050-Q1 device can supply power to external circuitry located on the high voltage (HV) side. This reference design can support up to 500-VDC or 350-VAC switching with a max of 4-A loading conditions.
Features
No isolated secondary supply required
3-kVRMS reinforced isolation
500-VDC/350-VRMS load with 4-A max
Two-level overcurrent protection
>2-A 100-ms load disconnect delay
>5-A immediate load disconnect
Two-level overtemperature protection
>60°C LED visual warning
>90°C immediate load disconnect
Tomi Engdahl says:
How solid-state relays simplify insulation monitoring designs in high-voltage applications
https://e2e.ti.com/blogs_/b/behind_the_wheel/posts/how-solid-state-relays-simplify-insulation-monitoring-designs-in-high-voltage-applications?HQS=null-null-hv-hvfoundation_solid_state_relays-asset-ta-electronicdesign_psfi_gan_l2-wwe_awr&DCM=yes&dclid=CJ3S7OXr6oEDFfxHwgod4KkIpA