Scientific equipment and services and techno instruments are both iso 9001: 2000 certified company engaged in manufacturing of complete laboratory experiments measuring instruments for bs and ms laboratories of physics, electronics and electrical engineering.
The company manufactures electronics and physics experimental setups.
R.C. Coupled-cum-feedback amplifier is a two-stage transistor amplifier with a provision for positive and negative feedback. The amount of feedback is adjustable and with the help of this, it is even possible to make the amplifier oscillate. A 9v-stabilized power is provided on the same board.