2 ms·
When I needed a beeper with a time delay for a fridge door, I looked at retail prices for a dual-555 IC (a 556) and for a dual-opamp IC (ended up going with a 6
by mananaysiempre 4y ago
When I needed a beeper with a time delay for a fridge door, I looked at retail prices for a dual-555 IC (a 556) and for a dual-opamp IC (ended up going with a 6002) and was surprised to find the opamp was something like three times cheaper, even taking into account the hefty capacitor for the time delay. (Active buzzers wouldn’t run off a 3V cell so I did need a dual IC for the delay and the square-wave generator.) Is this just a retail-specific distortion?
- londons_explore 4y agoAll of the components you mentioned would be sub-cent in large volumes and surface mount parts. I'd imagine the retail price is a combination of 'what the customer is willing to pay', and 'random'.