An example implementation of electronic gain control circuit in the form of a Voltage-Controlled Attenuator (VCA) designed with Op Amp and BJT transistors is presented. Please see VCA (Part2) Electronic Gain Control Formula and AC analysis ruclips.net/video/mq2PyO56OvU/видео.html to see the AC signal analysis and deriving the Electronic Gain Control formula for this Voltage-Controlled Attenuator (VCA). In Part1 video, overview and DC bias analysis of this electronically-controlled gain/attenuator circuit are discussed. This three-part circuit video series are posted in the Analog Circuits video playlist ruclips.net/p/PLrwXF7N522y4c7c-8KBjrwd7IyaZfWxyt For additional circuit examples see: Op Amp Amplifier with Electronic Gain Control ruclips.net/video/NoNgQpbj77Y/видео.html Analog Computer Vector Sum Calculator Design with Op Amp, BJT Transistors ruclips.net/video/PIAsa0QNVns/видео.html Instrumentation Amplifier with Electronic Gain Control ruclips.net/video/C4tghZ-q6Zs/видео.html I hope these examples of Electronic Gain/Attenuation Control Circuits are useful and interesting. 🙏
You're very welcome. Thanks for your interest. Glad that you liked this Part 1 VCA circuit video. Sure, Part2 of this video will be posted soon. In case you are interested, here are two related circuit examples: Op Amp Amplifier with Electronic Gain Control ruclips.net/video/NoNgQpbj77Y/видео.html Instrumentation Amplifier with Electronic Gain Control ruclips.net/video/C4tghZ-q6Zs/видео.html
Glad that you liked my videos. Thanks a lot for your encouraging comment & suggestion. Sure, I have a few videos currently planned. I'll work on a PLL/VCO video hopefully soon. In the meantime, I hope you find the following related video interesting: Complex Sinusoid Oscillator: How does it work? ruclips.net/video/GXRhmwmS5Zk/видео.html
Thanks for your follow-up comment. There are a few alternative products (some priced as low as $0.25) instead of the Analog Devices MAT14 Quad matched BJT. Please see www.digikey.com/en/products/filter/transistors/bipolar-bjt/bipolar-transistor-arrays/277 and www.mouser.com/c/?q=matched%20pair%20transistor to see available matched BJT transistor arrays. I hope this is helpful.
@@Parirash123 You're welcome. Btw, VCA Part2 Video ruclips.net/video/mq2PyO56OvU/видео.html is focused on AC analysis and proving the Electronic Gain Control formula for this Voltage-Controlled Attenuator (VCA). This three-part VCA Circuit video series are posted in the Analog Circuits video playlist. I hope Part2 video is interesting as well.
Thanks for watching & your interest. Part2 of this video will be posted soon. In case you are interested, here are two related circuit examples: Op Amp Amplifier with Electronic Gain Control ruclips.net/video/NoNgQpbj77Y/видео.html Instrumentation Amplifier with Electronic Gain Control ruclips.net/video/C4tghZ-q6Zs/видео.html
An example implementation of electronic gain control circuit in the form of a Voltage-Controlled Attenuator (VCA) designed with Op Amp and BJT transistors is presented. Please see VCA (Part2) Electronic Gain Control Formula and AC analysis ruclips.net/video/mq2PyO56OvU/видео.html to see the AC signal analysis and deriving the Electronic Gain Control formula for this Voltage-Controlled Attenuator (VCA). In Part1 video, overview and DC bias analysis of this electronically-controlled gain/attenuator circuit are discussed. This three-part circuit video series are posted in the Analog Circuits video playlist ruclips.net/p/PLrwXF7N522y4c7c-8KBjrwd7IyaZfWxyt
For additional circuit examples see: Op Amp Amplifier with Electronic Gain Control ruclips.net/video/NoNgQpbj77Y/видео.html
Analog Computer Vector Sum Calculator Design with Op Amp, BJT Transistors ruclips.net/video/PIAsa0QNVns/видео.html
Instrumentation Amplifier with Electronic Gain Control ruclips.net/video/C4tghZ-q6Zs/видео.html
I hope these examples of Electronic Gain/Attenuation Control Circuits are useful and interesting. 🙏
Thank you for this excellent video. It was a fantastic, in-depth explanation/analysis. I'm looking forward to the rest of the parts.
You're very welcome. Thanks for your interest. Glad that you liked this Part 1 VCA circuit video. Sure, Part2 of this video will be posted soon. In case you are interested, here are two related circuit examples:
Op Amp Amplifier with Electronic Gain Control ruclips.net/video/NoNgQpbj77Y/видео.html
Instrumentation Amplifier with Electronic Gain Control ruclips.net/video/C4tghZ-q6Zs/видео.html
Always enjoy your videos. Love your work.
Can you make a video on a VCO ?
Glad that you liked my videos. Thanks a lot for your encouraging comment & suggestion. Sure, I have a few videos currently planned. I'll work on a PLL/VCO video hopefully soon. In the meantime, I hope you find the following related video interesting: Complex Sinusoid Oscillator: How does it work? ruclips.net/video/GXRhmwmS5Zk/видео.html
MAT14 : 11$ per piece. There are very few matched BJTs available in the current market.
Thanks for your follow-up comment. There are a few alternative products (some priced as low as $0.25) instead of the Analog Devices MAT14 Quad matched BJT. Please see www.digikey.com/en/products/filter/transistors/bipolar-bjt/bipolar-transistor-arrays/277 and www.mouser.com/c/?q=matched%20pair%20transistor to see available matched BJT transistor arrays. I hope this is helpful.
@@STEMprof , Thanks for response. The suggested links were useful.
@@Parirash123 You're welcome. Btw, VCA Part2 Video ruclips.net/video/mq2PyO56OvU/видео.html is focused on AC analysis and proving the Electronic Gain Control formula for this Voltage-Controlled Attenuator (VCA). This three-part VCA Circuit video series are posted in the Analog Circuits video playlist. I hope Part2 video is interesting as well.
Sir comn bes....!❤
Thanks for watching & your interest. Part2 of this video will be posted soon. In case you are interested, here are two related circuit examples: Op Amp Amplifier with Electronic Gain Control ruclips.net/video/NoNgQpbj77Y/видео.html
Instrumentation Amplifier with Electronic Gain Control ruclips.net/video/C4tghZ-q6Zs/видео.html