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How do you use diodes and capapcitors to switch a 4v power supply
so it continuously charges a battery when not being used.
I have an hp2621a terminal which had a battery to keep nonvolatile settings
(eg baud rate, parity &c). I want a chargeable battery to keep those settings
going but to charge when I have the machine on.
Decades ago someone posted how to have a bike generator charge a capcitor so
that when you brake, you can power a back red light.
--
Vasos Panagiotopoulos panix.com/~vjp2/vasos.htm
---{Nothing herein constitutes advice. Everything fully disclaimed.}---
so it continuously charges a battery when not being used.
I have an hp2621a terminal which had a battery to keep nonvolatile settings
(eg baud rate, parity &c). I want a chargeable battery to keep those settings
going but to charge when I have the machine on.
Decades ago someone posted how to have a bike generator charge a capcitor so
that when you brake, you can power a back red light.
--
Vasos Panagiotopoulos panix.com/~vjp2/vasos.htm
---{Nothing herein constitutes advice. Everything fully disclaimed.}---