It's been days since I have been on this quest of making the pushbuttons that come with a electronics kit I bought to a toggle switch and although I have achieved it by using a NE555P IC Timer, I am not liking how it still consumes power even when the whole circuit is intended to be off. I am not turning anything on and off complex, just a resistor and an LED as the load because the key here is that I just want to make a toggle switch.
Here's what I've tried:
Toggle/latching circuits that have some components I don't have such as Relays, CMOS IC and logic IC's (If I have to use logics I have to make them by hand with transistors, lol, I'll probably have to use all my transistor stock). I only have LM358P, NE555P, BJT Transistors, Resistors, and Capacitors.
I'd like to know other ways of doing such tasks with no power consumption on off or if it is even possible, help would be highly appreciated.
Here's what I've tried:
- Toggle switch using dual inverters with OpAmps (I like how the LM358P works with this) - But this one also consumes power even off and does not always work for some reason, sometimes it just stays on or off, not able to switch at times. Dual Inverter/Not Gate OpAmp Toggle Switch.
- EEV Blog's Soft latch circuit - really nice circuit with few components, however, I don't have any MOSFET, so I used a BJT PNP transistor (2N3906). I can't get it to work because the PNP transistor is conducting current (Collector-Emitter) even if it's first powered on and its base is not grounded. I tried reviewing how a PNP works, hooked up the circuit again in a simulation with Falstad and NI Multisim live, same result, PNP is activated immediately after powering on even if I did not do anything. Scratched the circuit and went to try the simplest, with 555 timer.
- I think this is the easiest of them all, just the 555 IC, 2 capacitors, and 4 resistors. However, it also seems it is consuming power even if it's turned off. The NE555P Method.
Toggle/latching circuits that have some components I don't have such as Relays, CMOS IC and logic IC's (If I have to use logics I have to make them by hand with transistors, lol, I'll probably have to use all my transistor stock). I only have LM358P, NE555P, BJT Transistors, Resistors, and Capacitors.
I'd like to know other ways of doing such tasks with no power consumption on off or if it is even possible, help would be highly appreciated.