REVERSE COUNTER WITH MEMORY Russian patent published in 2008 - IPC H03K23/74 

FIELD: impulse engineering, possible use in devices of automatics and computer engineering.

SUBSTANCE: reverse counter with memory contains bit cells, made for each bit on polarized relay (1) with switching contact group (3) and separate windings (2) of activation and return, bridged by corresponding diodes (4,5), power supply (8) with temporal power removal delay at capacitor (15) and double switch (7), and also impulse generator (18), time setting device (20) and reverse impulse counter (17) with advance setting and reverse switch (19). Each bit output of reverse impulse counter (17) is connected respectively to non-inverting input of first (21) and inverting input of second (22) comparators of voltage, with second inputs of comparators combined and connected to average voltage level (23). Outputs of comparators (21,22) are connected to windings (2) of return and activation of polarized relay (1) of corresponding bit cell, starting ends of windings (2) are combined and connected to plus power bus through switch (7) of power supply (8), which is supplemented with electronic switch (9), which connects capacitor (15) of power supply (8) to plus power bus and starting ends of windings of polarized relays in case of unsanctioned shutdown of primary power.

EFFECT: increased reliability of memorization of digital information with simultaneous simplification of memorizing circuit.

2 cl, 1 dwg