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Momentary latching relay 2011-12-29

Just for fun I designed and built this simple circuit which drives a monostable relay by a singol momentary button.
Supplied by 24VDC the circuit works for a 12V-140 ohm coil. The relay should feature a time response of 5 milliseconds or less.

R1 -470ohm
R2 - 22Kohm
R3 - 180ohm - 3W
R4 - 150ohm -3W
C - 470uF
K - relay coil - 12VDC -140ohm - 3 milliseconds


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