| Electronics > Projects, Designs, and Technical Stuff |
| Looking for ideas to DIY uA Meter (shunt amplifier) |
| (1/6) > >> |
| 001:
Hi What the best way to build amplifier x10 x100 for shunt? Thanx |
| 001:
Nobody build some similar unit? :-// |
| TheUnnamedNewbie:
If you want to make a very low current meter, or a meter with very low burden voltage, usually a TIA (transimpedance amplifier) is used. For a shunt meter - what is wrong with a standard opamp in 10x or 100x feedback? |
| 001:
--- Quote from: TheUnnamedNewbie on December 12, 2018, 12:15:24 pm ---For a shunt meter - what is wrong with a standard opamp in 10x or 100x feedback? --- End quote --- I understand main idea of basic opamp usage But I dont know how to choose values range and opamp type too Can You link some similar project? Thanx |
| Gyro:
--- Quote from: TheUnnamedNewbie on December 12, 2018, 12:15:24 pm ---If you want to make a very low current meter, or a meter with very low burden voltage, usually a TIA (transimpedance amplifier) is used. --- End quote --- Yes, start with a Picoammeter design and degrade it. ;) https://www.eevblog.com/forum/projects/picoammeter-design/ |
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