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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

Mini FM Radio Transmitter Circuit

This is an mini fm Radio transmitter circuit. The supply voltage is between one.1 � three Volts with power consumption is one.8 mA at one.5 Volts. This circuit ought to be able to cover 30 meters of range max. at one.5 Volts.

Note:
* Use a battery for powering the circuit.It will reduce noise.
* An FM antenna from a old radio is a better option than the wire antenna.

Mini FM Radio Transmitter Circuit

This device is NPN General Purpose Amplifier for use as a medium power amplifier and switch requiring collector currents up to 500mA.
Mini FM Radio Transmitter CircuitAbsolute Maximum Ratings.
  • Collector-Emitter Voltage (VCEO ) : 40 V.
  • Collector-Base Voltage (VCBO) : 75 V.
  • Emitter-Base Voltage (VEBO) : 6.0 V.
  • Collector Current (IC) 1.0 : A.
  • Operating and Storage Junction Temperature Range (TSTG) :- 55 ~ 150 °C.
  • Collector-Emitter Breakdown Voltage : 40 V.
  • Collector-Base Breakdown Voltage : 75 V.
  • Emitter-Base Breakdown Voltage : 6.0 V.

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