Difference between revisions of "Circuit Building Blocks"
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They should be simple enough that you could combine them in a larger design (i.e. as part of an op amp | They should be simple enough that you could combine them in a larger design (i.e. as part of an op amp | ||
| − | or ASIC). I'm not going to include fundamental circuits (such as: https://en.wikipedia.org/wiki/Template:Transistor_amplifiers or basic | + | or ASIC). I'm not going to include fundamental circuits (such as: https://en.wikipedia.org/wiki/Template:Transistor_amplifiers or basic op amps which you can find in Electronics for Inventors or AoE.) |
These are sometimes called Topologies. Like a map. A map topology. If maps lie, then it's likely these circuits will lie as well. Expect any examples to be missing required components to work. | These are sometimes called Topologies. Like a map. A map topology. If maps lie, then it's likely these circuits will lie as well. Expect any examples to be missing required components to work. | ||
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* [https://circuitcellar.com/resources/differential-pairs-101/ Differential Pair] | * [https://circuitcellar.com/resources/differential-pairs-101/ Differential Pair] | ||
* [https://circuitcellar.com/resources/wilson-current-mirror/ Current Mirror (Wilson ver.)] | * [https://circuitcellar.com/resources/wilson-current-mirror/ Current Mirror (Wilson ver.)] | ||
| − | |||
* [https://circuitcellar.com/resources/quickbits/bandgap-voltage-reference/ Bandgap Voltage Reference] - Limiting temperature effects in semiconductors. | * [https://circuitcellar.com/resources/quickbits/bandgap-voltage-reference/ Bandgap Voltage Reference] - Limiting temperature effects in semiconductors. | ||
| + | ===Unity Gain=== | ||
| + | <gallery> | ||
| + | File:High slew rate power amplifier with A741 (IPRS databook).png|Similar diamond buffer made with op amp. Note the transistors are powered by the supply rails of the op amp. | ||
| + | File:Fairchild 1973 High Slew Rate Power Amplifier.png|Fairchild example of the diamond buffer. | ||
| + | </gallery> | ||
| + | * https://en.wikipedia.org/wiki/Diamond_buffer - Unity gain, high current. | ||
| + | https://www.eevblog.com/forum/projects/opamps-die-pictures/msg5450288/#msg5450288 | ||
==Op Amp Circuits== | ==Op Amp Circuits== | ||
===Howland Topology=== | ===Howland Topology=== | ||
| + | * [https://circuitcellar.com/resources/quickbits/howland-current-source/ Current Source (Howland)] Voltage Controlled Current Source, see also: https://www.eevblog.com/forum/beginners/current-source-with-p-channel-mosfet-not-working-as-expected/msg5447837 | ||
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| + | [[Category:online notes]] | ||
Latest revision as of 03:46, 16 April 2024
The goal here is to have a page of various transistor circuits, but for now I'll include op amps.
They should be simple enough that you could combine them in a larger design (i.e. as part of an op amp or ASIC). I'm not going to include fundamental circuits (such as: https://en.wikipedia.org/wiki/Template:Transistor_amplifiers or basic op amps which you can find in Electronics for Inventors or AoE.)
These are sometimes called Topologies. Like a map. A map topology. If maps lie, then it's likely these circuits will lie as well. Expect any examples to be missing required components to work.
Transistor Circuits
Programmable Unijunction Transistor Sawtooth
Make Electronics: Learning by Discovery, Charles Platt
Quick Bits Examples
Most of these are also referenced in the Art of Electronics.
- Differential Pair
- Current Mirror (Wilson ver.)
- Bandgap Voltage Reference - Limiting temperature effects in semiconductors.
Unity Gain
Similar diamond buffer made with op amp. Note the transistors are powered by the supply rails of the op amp.
Fairchild example of the diamond buffer.
.png)
- https://en.wikipedia.org/wiki/Diamond_buffer - Unity gain, high current.
https://www.eevblog.com/forum/projects/opamps-die-pictures/msg5450288/#msg5450288
Op Amp Circuits
Howland Topology
- Current Source (Howland) Voltage Controlled Current Source, see also: https://www.eevblog.com/forum/beginners/current-source-with-p-channel-mosfet-not-working-as-expected/msg5447837
