Learn about Solid State Relays - SSR

Electromagnetic Relays - 

NO - Normally Open - when the relay is not energized or activated, this terminal is open-circuit.

NC - Normally Closed - when the relay is not energized or activated, this terminal is closed circuit.

COM - The Common Center Terminal in relays. This is the center terminal that closes circuit with NC-NO.

The terminals are potential free and floating and are insulated from the control signals or coil windings by many kilo volts. Many provide visible isolation. These terms apply to SSR or Big Contacters too.

• Relays and Contactors
• Drive SCR thyristor 555
• Relay Driver

Solid State Relays



Solid State Relays - SSR

They are called SSR as there are made of semiconductors and have no moving parts to wear out. They do generate heat depending on load and switching. Thyristors are used in most as they are rugged, mosfets and IGBT may also be used for various applications.

In this section you will find SSR designs and PCB layouts which you can study. These were made and sold by me years ago. So the PCB layouts have gone thru some revisions and they worked quite well.

Applications -

Many machines and equipment use some SSRs in their products which may need replacement. So the SSR is not only sold to OEMs but also to Service-Maintenance Market. These are also modified as Output Modules for digital outputs coming from embedded systems or Computers.

Analog Op-Amp Interactive Tutors

I have made some Web Widgets, these are analog opamp tutors. Interactive Tutorial with Simulated Meters and Potentiometers, demonstrating how Operational Amplifier functions in different configurations.

Interactive Tutorials using Virtual Electronic Components 

Slide the Potentiometers just like you would operate a Sliding Control. Drag the Knob on Pot to increase or decrease the resistance. The Resistance is shown is blue letters and dynamically alters value as you slide the pot.

The mV Source is varied by just moving mouse pointer over the two buttons, no clicking. This reduces finger strain and also you have a long lasting mouse. The mV buttons are special, the variation picks up speed if you let the mouse pointer remain on the button. This is Ramp-up and Ramp-down. This enables you to set it faster with just two buttons.

Finally you have a DVM a Digital Volt Meter that just Displays the Voltage at any Point, this readout value has to be noted down.

Analog Electronics Tutorials

• Inverting Amplifier - Op-Amp Circuits
• Non-Inverting Amplifier - Op-Amp Circuits
• Buffer or Unity Gain Op-Amp
• Differential Amplifier - Op-Amp Circuits
• Two Op-Amp Differential Amplifier
• 3 Op-Amp Differential Instrumentation Amp

If you wish to examine the code - Analog Tutorials Project Page.

MunEDA - Enhance Design Performance

They provide solutions in EDA that simplify the circuit design process and enhance the Performance/Yield. They provide the technology for analysis and optimization of yield and performance of analog, mixed-signal and digital designs.

MunEDA - Enhance Design Performance

MunEDA WiCkeD tools are seamlessly integrated into the main industrial standard simulation environments and design frameworks but also support customer specific inhouse simulators and designflows.



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BAS - Basic & Sensitivity Analysis

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