Simple reset signal (I used it for the Oric)
Small reset circuit with pulse of about 250ms-300ms to be used as an alternative reset.
I used it to replace the ORIC-1 and Atmos reset signal. Not to be used together with other reset signals present, these must first be disconnected.
SMD Version:
Components:
C1,C3: 100nF (0805)
C2: 10uF 10v/16v (1210)
U1: NE555 (SOP-8 L5.0-W4.0-P1.27-LS6.0)
U2: SN74LVC1G04DBVRG4 (SOT-23-5 L3.0-W1.6-P0.95-LS2.8-BR)
R1: 1M Ω 1/4w (0805)
R2: 47k Ω 1/4w (0805)
THT Version:
Components:
C1,C3: 100nF
C2: 10uF 16v/25v
U1: NE555 (DIP-8)
U2: 74LS04 (DIP-14)
R1: 1M Ω 1/4w
R2: 47k Ω 1/4w
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