INSTEAD OF A MICROPHONE — DYNAMIC HEAD

INSTEAD OF MICROPHONE — DYNAMIC HEADWhen there are dynamic microphone, you can substitute any small-sized dynamic head. Here’s what proposes to make to the Yugoslav magazine “Radio Amater”. Since the voltage developed by the head, a little, pre-amplify with low-yield of germanium, for example, МП39— МП42, or silicon (KT361, КТ203, КТ104) of the transistor included in the scheme with a common base. For normal operation of the cascade is necessary to select the resistance of the R1 resistor value such that the voltage at the collector of the semiconductor device was approximately half the voltage of the power supply.

Recommend to read

  • WITH ELEKTROLETA ON A WALKWITH ELEKTROLETA ON A WALK
    Speed, racing, training, training, flight, control line, radio control room - which only the definitions used to describe the purpose and characteristics of a particular flying...
  • TAP CORKSCREWTAP CORKSCREW
    To remove from blind hole a pin in it, pre-cut the threads, and then using a long bolt with a grommet pull out. This operation can be accelerated by assigning the role of "spin" to the...