Online Simulation

Creating Subcircuits from Spice Models with TINACloud: .MODEL format, now with English voice-over

In TINACloud you can create your own components from any Spice models given in .MODEL format that you have made or downloaded from the Internet.

Watch our tutorial video to see how to create a  TINA macro component using a BC846 NPN Bipolar transistor downloaded previously from the web.

 creatingsubcircuitsfromspicemodelsintc-dotmodel-yt

 

Download the FREE trial demo of TINA Design Suite and get:

  1. One year free access to TINACloud (the cloud-based, multi-language, installation-free online version of TINA now running in your browser anywhere in the world.)
  2. An immediate 20% discount from the offline version of TINA
  3. Free license for your second computer, laptop etc.
Click here to download the FREE trial demo of TINA

 

www.tina.com

 

You can also find below the script of the video:

Creating Subcircuits from Spice Models with TINACloud: .MODEL format

In TINACloud you can  create your own components from any Spice models given in .MODEL format that you have made or downloaded from the Internet.

Some device models are stored in Spice .MODEL format.

Let’s download one from the internet and add the model to TINACloud

Here is the model of the BC846 NPN Bipolar transistor

Let’ save this model

In Google Chrome click the right mouse button.

In other browsers find the Save as command

Select Save as

Switch the Save as type into All files

and Save it as a .cir file, as this is one of the extensions that TINACloud expects.

Start TINACloud

To invoke the Schematic Editor

Select New from the File menu

The Schematic Editor appears

Click the Insert button denoted by a  green + sign to invoke the Insert menu

Select Upload macro

Let’s name the new Macro as BC846

Switch into From File from Current Circuit

then Click Choose Files

Enter BC846.cir into the file name field , then click Open

Now click Upload

In the dialog box the following message appears: Macro uploaded.

Click OK

You can simularly add any Spice models in Spice .MODEL format.

Let’s check how to insert the new model into TINACloud.

Select Insert macro from the Insert (+) menu

Now select BC846 then press OK

The new component will appear attached to your cursor and you can place it anywhere on the workspace by moving the mouse and clicking the left mouse button.

Now let’s create the following test circuit by adding a few more components to test the new model.

Select the Resistor from the Basic Toolbar

Use the Rotate left or Rotate right icon then hold the left-mouse button down while moving it and connect it to the Transistor

Repeat this procedure for R2 & R3

Double click the Resistances (R1 & R2) and in their Properties window set the parameters as shown

R2=47k; R3=3k

click OK

Now select the Ground and connect it to the Transistor

Next add the remaining parts and the wires

then Click the Save button to save the file

Let’s save it under the name BC846_test.tsc

Let’s test this circuit using DC Interactive mode.

Press the DC button

The model works as expected.

Share and Enjoy

  • Facebook
  • Twitter
  • Delicious
  • LinkedIn
  • StumbleUpon
  • Add to favorites
  • Email
  • RSS

New! Analysis links in TINACloud

A new exciting feature in TINACloud that now you can add links to your circuits which allow you to carry our most TINACloud analyses simply by clicking the links without using TINAclouds’s menus. This feature is extremely useful when you create presentations for your customers.

 

 

In the above window click any of the underlined links to experience the new feature.

For example if you click the “Click here to run AC nodal analysis” link the following screen will appear.

AC Node voltages

By default is shows the rms voltage on the output(s). If you click with the cursor on any nodes (yellow boxes) of the circuit it will display the detailed nodal analysis data in a small window. Click You can repeat this any times until you press the Close button to finish the Nodal Analysis.

Further if you click the “Click here to run AC transient analysis” link, the Transient analysis will automaticall run and the following screen will appear. You can now run cursor on the diagram or close the diagram and make further analyses.

Transient

Click here to watch our tutorial video!

Download the FREE trial demo of TINA Design Suite and get:

  1. One year free access to TINACloud (the cloud-based, multi-language, installation-free online version of TINA now running in your browser anywhere in the world.)
  2. An immediate 20% discount from the offline version of TINA
  3. Free license for your second computer, laptop etc.
Click here to download the FREE trial demo of TINA

 

Dr. Michael Koltai

www.tina.com
www.tinacloud.com

Share and Enjoy

  • Facebook
  • Twitter
  • Delicious
  • LinkedIn
  • StumbleUpon
  • Add to favorites
  • Email
  • RSS

Creating Subcircuits from Spice Models with TINACloud: .MODEL format

In TINACloud you can also create your own components from any Spice models given in .MODEL format that you have made or downloaded from the Internet.

Watch our tutorial video to see how to create a  TINA macro component using a BC846 NPN Bipolar transistor downloaded previously from the web.

Creating Subcircuits from Spice Models with TINACloud blog

 

Download the FREE trial demo of TINA Design Suite and get:

  1. One year free access to TINACloud (the cloud-based, multi-language, installation-free online version of TINA now running in your browser anywhere in the world.)
  2. An immediate 20% discount from the offline version of TINA
  3. Free license for your second computer, laptop etc.
Click here to download the FREE trial demo of TINA

 

Michael Koltai
www.tina.com

Share and Enjoy

  • Facebook
  • Twitter
  • Delicious
  • LinkedIn
  • StumbleUpon
  • Add to favorites
  • Email
  • RSS

Creating Subcircuits from Spice Netlists with TINACloud

In TINACloud you can create your own components from any Spice subcircuit that you have made or downloaded from the Internet.

Watch our tutorial video to see how to create a  TINA macro component using a THS4121 Spice Subcircuit downloaded previously from the web.

Creating subcircuits from spice netlists with blog

Download the FREE trial demo of TINA Design Suite and get:

  1. One year free access to TINACloud (the cloud-based, multi-language, installation-free online version of TINA now running in your browser anywhere in the world.)
  2. An immediate 20% discount from the offline version of TINA
  3. Free license for your second computer, laptop etc.
Click here to download the FREE trial demo of TINA

 

Michael Koltai
www.tina.com

Share and Enjoy

  • Facebook
  • Twitter
  • Delicious
  • LinkedIn
  • StumbleUpon
  • Add to favorites
  • Email
  • RSS

Creating Subcircuits from Schematics in TINACloud

In TINACloud you can convert any schematic diagram into a subcircuit called a Macro.

Watch our tutorial video  to see how to create a Macro in TINACloud:

CreatingSubcircuitsfromSchematicwithTC-blog

 Download the FREE trial demo of TINA Design Suite and get:

  1. One year free access to TINACloud (the cloud-based, multi-language, installation-free online version of TINA now running in your browser anywhere in the world.)
  2. An immediate 20% discount from the offline version of TINA
  3. Free license for your second computer, laptop etc.
Click here to download the FREE trial demo of TINA.

 

Michael Koltai
www.tina.com

Share and Enjoy

  • Facebook
  • Twitter
  • Delicious
  • LinkedIn
  • StumbleUpon
  • Add to favorites
  • Email
  • RSS

Time-to-Voltage Converter

Applications such as rangefinders and ballistic chronographs require a high resolution measurement of time. This can be a time period of a few hundred nanoseconds to a few milliseconds. This is an analog circuit that can convert a time period to a voltage with high linearity and high resolution. In principle, a current source is used to charge a capacitor for the time interval and then the voltage across that capacitor is measured. A REF200 precision current source is used to furnish 200uA to a fast SPDT analog switch, represented by SW1 & SW2. This switch steers the current into ground or into a 100pF capacitor C2. U1 is simply a high- precision buffer amplifier for the voltage on C2. SW3 is a reset that zeros the voltage on C2. Initially, SW3 is open and SW2 steers the 200uA to ground until a START command is received; SW2 then opens and SW1 closes, steering the current into C2. The capacitor charges until a STOP command is received;  SW1 then opens and SW2 closes. The voltage on C2 is proportional to the time between START and STOP; scale time range is determined by the value of C2 so this capacitor should be high quality. A polystyrene or NPO (COG) ceramic is recommended for C2. A small DMOS SD211 can be used for SW3.  (Circuit is created by  Neil P. Albaugh, TI-Tucson)

Time-to-Voltage Converter circuit:

 Time-to voltage converter-blog3

 

Online Simulation of a Time-to-Voltage Converter circuit:

The great feature of the TINA circuit simulator that you can analyze this circuit immediately with TINACloud the online version of TINA. Of course you can also run this circuit in the off-line version of TINA.

Click here to invoke TINACloud  and analyze the circuit yourself or watch our tutorial video!

You can send this link to any TINACloud customers and they can immediatelly load it by a single click and then run using TINACloud.

Michael Koltai
www.tina.com

Share and Enjoy

  • Facebook
  • Twitter
  • Delicious
  • LinkedIn
  • StumbleUpon
  • Add to favorites
  • Email
  • RSS

Shunt Amplifier with Offset Output

By reducing the +12V common- mode voltage, an INA122 can sense the voltage drop across a shunt resistor while being powered by the same +12V power supply.  Rg controls the voltage gain of U1. This circuit is scaled for a 2.5V output range centered around +1.25V; thus this amplifier can measure bidirectional shunt current. An INA122 does not feature a R-R output so the sinking current is limited to about -0.3A. This can be useful where battery current must be monitored while it is being charged or discharged. Bypass capacitors are not shown. (Circuit is created by Tucson)

Shunt Amplifier with Offset Output circuit:

 Shunt amplifier with offset output

Online Simulation of a Shunt Amplifier with Offset Output Circuit:

The great feature of the TINA circuit simulator that you can analyze this circuit immediately with TINACloud the online version of TINA. Of course you can also run this circuit in the off-line version of TINA.

Click here to invoke TINACloud and analyze the circuit yourself or watch our tutorial video!

You can send this link to any TINACloud customers and they can immediatelly load it by a single click and then run using TINACloud.

Michael Koltai
www.tina.com

Share and Enjoy

  • Facebook
  • Twitter
  • Delicious
  • LinkedIn
  • StumbleUpon
  • Add to favorites
  • Email
  • RSS

Single-Ended Input Differential Output Amplifier

A DRV134 converts a single- ended input signal to a differential output. Differential output is used to drive the inputs of some A/D converters and to drive tristed- pair or Twinax transmission lines in a high- noise environment. An INA137 or INA137 can be used as a differential line receiver to convert the differential voltage back to single- ended. In AC- only applications such as audio, capacitors can be inserted between the outputs and their respective sense pins to reduce the DRV134 output DC offset. See the data sheet for details. Bypass capacitors have been omitted in this schematic but their use is recommended. (Circuit is created by Neil P. Albaugh, TI- Tucson )

Single-Ended Input Differential Output Amplifier  Circuit:

single ended diff opamp

Online Simulation of a Single-Ended Input Differential Output Amplifier  Circuit

The great feature of the TINA circuit simulator that you can analyze this circuit immediately with TINACloud the online version of TINA. Of course you can also run this circuit in the off-line version of TINA.

Click here to invoke TINACloud and analyze the circuit yourself or watch our tutorial video!

You can send this link to any TINACloud customers and they can immediatelly load it by a single click and then run using TINACloud.

Michael Koltai
www.tina.com

Share and Enjoy

  • Facebook
  • Twitter
  • Delicious
  • LinkedIn
  • StumbleUpon
  • Add to favorites
  • Email
  • RSS

PI Temperature Control Integrator

 

Proportional-integral response for control systems can be generated by a simple analog circuit. Feedback components R2, C2, & C1 together with input resistor R1 control the frequency response of U1. R3 is added to the circuit to provide feedback in a DC analysis and it is not necessary in an actual circuit. For stability, the control loop dominant pole should be formed by this integrator. (Circuit is created by Neil P. Albaugh, TI-Tucson)

PI Temperature Control Integrator circuit:

proportional integral temperature control integrator-blog

Online Simulation of a PI Temperature Control Integrator Circuit

The great feature of the TINA circuit simulator that you can analyze this circuit immediately with TINACloud the online version of TINA. Of course you can also run this circuit in the off-line version of TINA.

Click here to invoke TINACloud and analyze the circuit, or watch our tutorial video!

You can send this link to any TINACloud customers and they can immediatelly load it by a single click and then run using TINACloud.

Michael Koltai
www.tina.com

Share and Enjoy

  • Facebook
  • Twitter
  • Delicious
  • LinkedIn
  • StumbleUpon
  • Add to favorites
  • Email
  • RSS

Very Low DC Offset Wideband Amplifier

The OPA380 is an integrator- stabilized operational amplifier that was developed primarily for transimpedance amplifier applications. Its inverting input is that a 90MHz CMOS op amp but its non-inverting input is an integrator non-inverting input, allowing only very low frequency response through this input. In most dual- supply applications, the OPA380 non- inverting input is simply tied to ground. In single- supply applications, it can be used to provide a DC offset. By adding an input resistor, R1, a transimpedance amplifier is transformed into a conventional inverting amplifier. The usual op amp inverting gain equation  applies: Av = – (R2/R1) in V/V. The OPA380 is input offset voltage is specified as 4uV typical, 25uV maximum @ 25C, drift is 0.03uV/C typ, 0.1uV/C max.  (Circuit is created by Neil P. Albaugh  TI- Tucson)

 Very Low DC Offset Wideband Amplifier circuit:

 Low vos wideband amplifier

Online Simulation of the Very Low DC Offset Wideband Amplifier Circuit

The great feature of the TINA circuit simulator that you can analyze this circuit immediately with TINACloud the online version of TINA. Of course you can also run this circuit in the off-line version of TINA.

Click here to invoke TINACloud and analyze the circuit, or watch our tutorial video!

You can send this link to any TINACloud customers and they can immediatelly load it by a single click and then run using TINACloud.

Michael Koltai
www.tina.com

Share and Enjoy

  • Facebook
  • Twitter
  • Delicious
  • LinkedIn
  • StumbleUpon
  • Add to favorites
  • Email
  • RSS