Document Type and Number:
Japanese Patent JPS507902
Kind Code:
B1
Abstract:
1,238,398. Active filters. ELECTR-OPTICAL INDUSTRIES Inc. 18 Aug., 1969 [26 Sept., 1968], No. 41187/69. Heading H3U. In a commutated type filter having a series impedance 47 and switched shunt impedauces 60 ... 65, the switches 40 ... 45 are actuated by a ring counter FF1 . . . FF6. The connections from the counter to the switches may inelude buffer amplifiers (100 ... 105) and the reset circuit for the counter may include a logic circuit (111, 116) to eliminate the circulation of false pulses, Fig. 3 (not shown).
Application Number:
JP7681969A
Publication Date:
March 31, 1975
Filing Date:
September 26, 1969
Export Citation:
International Classes:
H03H15/02; H03H19/00; (IPC1-7): H03H7/02; H03K21/32; H03K23/08
Next Patent: JPS507903