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BIASING OF TRANSISTOR IN CLASS A OPERATION – GUPTA BRAND 200294

Objective : To study the effect of biasing network of output signal and calculation on current gain and Frequency response for proper biasing network in class ‘A’ operation.
Features : Instrument comprises of DC Regulated protected Power Supply, one moving coil Round meter, 3 different values of RL and RE selectable using bandswitch provided on front panel, Circuit diagram is printed.

BIASING TECHNIQUES OF TRANSISTOR (BJT) – GUPTA BRAND 200295

Objective : To study of different Biasing Circuit for Transistor such as Fixed Bias Method, Collector to Base Bias, Emitter Resistor Bias and Voltage Divider Bias methods.
Features : Instrument comprises of DC Regulated Power Supply, One NPN transistor, 2 round meters to measure the voltage and current, Different type of Resistances connected inside

BICYCLE ERGOGRAPH – GUPTA BRAND 30009587

A bicycle frame is supported by a wooden stand, from the front of which two uprights ascend and carry a desk and cross piece, which provide for the attachment, directly in front of the subject, of the tension balances and other pieces in front of the subject, of the tension balances and other pieces of apparatus. A cast iron wheel of 5 1/2 feet in circumference, weighing 22 Kilos and mounted on ball bearing, is substituted for the back wheel. This wheel has slightly beveled edges and is turned true. To the circumference of this, a stout calico is applied, and the two ends of the band ate attached to spring balances of 6 lbs. range (Graduated in one oz.) calico-band to the balance pass round adjustable pulleys in order to give them the right direction. An adjustable record counter records the revolution of the wheel.