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The Armstrong super-regenerative circuit (1922)

Eltz, George Jacob, b. 1893 · New York, N.Y. : Radio Directory and Pub. Co. · leaf 23

An illustration from The Armstrong super-regenerative circuit, 1922, leaf 23
coilsshould be so placed that the outside of the winding connectsto the plate and grid when they are arranged for oscillation. 17. This is a .003 M. F. fixed mica condenser and with coil No.16 gives a frequency of the order of 7000 to 8000 cycles.This frequency is sufficiently high to be readily… … O) a «4HO a;73 O o _ CO (D .S •i -a d o o bfi o fl 3 03 s u -l-> (D a o O) J rt The Armstrong Super-Regenerative Circuit 23 cases though frequently with certain tubes, both negativeC batteries must be varied to obtain results. One ortwo small flashlight cells are suitable.19-20-21-22-23. These…

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