| http://www.w3.org/ns/prov#value | - This Darlington stage is made using a couple of high gain transistors bc107A's.Here, the signal received from the 741 output is suitably amplified so that it finally sent whether to the headphone or to the antenna here i have shown to the antenna we can use the output for the headphone also. we may worry about the external nine volt given to the circuit as so to make the signal powerful from the i
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