Summary of AC Solid State Relay
This article describes a simple AC solid-state relay circuit using the Sharp S216S02, designed to control high-voltage loads up to 1KW with 4KV isolation. Unlike electromechanical relays, this device features no moving parts, offering fast switching speeds and long-term reliability. Key specifications include support for AC loads up to 16A peak, a maximum supply of 600V AC, and flexible TTL or transistor input triggering. The design includes a small PCB equipped with an onboard snubber circuit specifically for handling inductive loads.
Parts used in the AC Solid State Relay Circuit:
- Solid State Relay S216S02 from SHARP
- Infrared emitting diode (IRED)
- Phototraic Detector
- Main output Traic
- Small PCB with on Board Snubber Circuit
This simple circuit designed around Solid State Relay S216S02 from SHARP. The S216S02 solid State Relay (SSR) is an integration of an infrared emitting diode (IRED), a Phototraic Detector and a main output Traic. These devices are ideally suited for controlling high voltage AC loads with solid state reliability while providing 4KV isolation from input to output.
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. SSRs consist of a opto-isolator which responds to an appropriate input (control signal), a solid-state electronic switching device which switches power to the load circuitry, and a coupling mechanism to enable the control signal to activate this switch without mechanical parts. This relay designed to switch either AC load up-to 1KW. It serves the same function as an electromechanical relay, but has no moving parts. Solid-state relays have fast switching speeds compared with electromechanical relays, and have no physical contacts to wear out.
Features
- AC Load Upto 16Amps Peak
- Maximum Supply input 600V AC
- TTL Input Trigger Voltage across Anode and Cathode 3 to 6V @ 20mA
- Input Trigger Voltage across Transistor Base 1.5V to 24V DC 5mA
- Small PCB with on Board Snubber Circuit for inductive Load
For more detail: AC Solid State Relay
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What is the primary function of the S216S02 solid state relay?
It is designed to control high voltage AC loads with solid state reliability while providing 4KV isolation. -
How does a solid state relay differ from an electromechanical relay?
SSRs have no moving parts, faster switching speeds, and no physical contacts to wear out. -
What is the maximum AC load capacity of this specific relay design?
The relay is designed to switch AC loads up to 1KW and supports peaks up to 16 Amps. -
Can this circuit handle inductive loads?
Yes, it features a small PCB with an onboard snubber circuit specifically for inductive loads. -
What are the TTL input trigger voltage requirements?
The TTL input requires a trigger voltage across Anode and Cathode of 3 to 6V at 20mA. -
Is it possible to use a transistor base for triggering?
Yes, the input trigger voltage across the Transistor Base can range from 1.5V to 24V DC at 5mA. -
What is the maximum supply input voltage supported?
The maximum supply input is rated for 600V AC.
