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High CMRR Instrumentation Amplifier (Schematic and Layout) design for biomedical applications

Instrumentation amplifiers are intended to be used whenever acquisition of a useful signal is difficult. IA’s must have extremely high input impedances because source impedances may be high and/or unbalanced. bias and offset currents are low and relatively stable so that the source impedance need not be constant. Balanced differential inputs are provided so that the signal source may be referenced to any reasonable level independent of the IA output load reference. Common mode rejection, a measure of input balance, is very high so that noise pickup and ground drops, characteristic of remote sensor applications, are minimized.Care is taken to provide high, well characterized stability of critical parameters under varying conditions, such as changing temperatures and supply voltages. Finally, all components that are critical to the performance of the IA are internal to the device. The precision of an IA is provided at the expense of flexibility. By committing to the one specific task of

12VDC Electronic Fuse Circuit

12VDC Electronic Fuse Circuit

In electronics and electrical engineering a fuse is a type of more protection devices. Its essential component is a metal wire or strip that melts PLS current flows too, which breaks the circuit that is connected, thus protecting the other components of the circuit from damage caused by excess current.

circuit diagrams in the upstairs lounge is an electronic fuse that protects against short circuit load voltage of 12 VDC. You can adjust the flow using a 10K pot. If the fuse is used with very high currents, the lower the resistance value 0.1/5W, the value of watts of resistance must also increase

Note:
  • IC1 can use any of the op-amp IC (eg OA 741).
  • IC2 can use any SR latch flip-flop (eg 54HC279).
  • Use a 12V relay and currents that are customized to your needs.

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