Recent content by AdrianN

Sounds like long term damage due to accumulated stress. Photoresistors can be easily damaged by voltage spikes. You have a 12V battery, so no spike there, but the battery charger can bring spikes into the system. I would look with a scope at the photoresistor voltage, during battery charge...

Yes, you need a bipolar power supply. Your circuit is a unipolar to bipolar converter. If interested, I have an article about this type of circuit here: Design a Unipolar to Bipolar Converter for a Unipolar Voltage Output DAC...

Use the datasheet for your answer. You can find it here: http://www.analog.com/static/imported-files/data_sheets/AD7811_7812.pdf" I assume you use a uC to drive the ADC. The clock comes from uC. On the ADC DIN input, the uC sends the serial data to program the ADC. Each bit is...

I don't use TINA but, in any SPICE based engine, you can troubleshoot your circuit by replacing the Op Amps with voltage controlled voltage sources. Make their gains 100000. If it works, you have a problem with your Op Amp models. If it does not, there is a problem with the program itself. A...

Control is used anywhere. Knowing the control theory you can go in any industry, from energy, to telecom and instrumentation.

Read about Kirkoff's Laws and apply them in your circuit. Otherwise, post a schematic and we may find an easier way to solve it.

I usually download the SPICE models I need from the semiconductor manufacturers. They provide these models on their websites. Look at Analog Devices, Texas Instruments, etc.

You might want to try this one: https://www.amazon.com/dp/0070049084/?tag=pfamazon01-20