All Questions
19
questions
3
votes
2
answers
458
views
Reduce size of power source [closed]
I want to use a 9 V battery to unlock a 12 V latch. I am using 8 AA batteries now. The 9 V battery will unlatch, but is too weak to overcome any resistance, no snap!
- 39
4
votes
3
answers
334
views
Battery-powered 3-5 V MCU, but 12 V solenoids. How to power?
I'm building a battery-powered safe cabinet hobby project. It uses the 32L152CDISCOVERY board. I plan to charge it with a solar panel. I should operate at least 6 months without maintenance.
The MCU ...
- 41
0
votes
1
answer
188
views
Latching solenoid supply circuit / control
I have done DC motor control with an H-bridge circuit before. I used a 3.6 V, 9000 mAh (ERC26500) battery and had no problems.
Now I want to use a latching solenoid and I need 7.2 V for that, so I ...
- 673
0
votes
1
answer
585
views
How does a camera flash get high voltage and current from a small battery?
I am a beginner trying to make coilgun. I see videos use camera flash circuit with capacitor that outputs 220V and a good current (5A) from 1.5V AAA battery
How does this circuit work to give this ...
1
vote
2
answers
682
views
Solenoids draw way more current required
I have these 12 V solenoids from China.
I am using 6 in parallel and since each requires 300 mA, their effective resistance is about 6.67 Ω. This means the current required is around 1.8 A and should ...
- 73
0
votes
1
answer
43
views
Supercapacitor Solar Cell Locking Device
I am trying to use a solar cell to power a locking device. The solar cell being used is a custom 10W 9V. It charges a lithium ion battery which is used to power an MCU and a couple of other things (...
- 11
0
votes
2
answers
2k
views
What battery should I use to power a solenoid?
I’m quite new to electrical work and I’m trying to open and close a solenoid valve with a battery.
I have bought these tiny 23a 12 V batteries. The solenoid says it needs 12 VDC. I have no idea why it’...
- 325
2
votes
0
answers
443
views
How do I prevent my BMS from tripping when solenoid is connected?
I am working on a project that is effectively just a battery powered reticulation system. It is charged through a solar array and cheap MPPT charger, which connects into the battery via the BMS. The ...
1
vote
1
answer
267
views
Solenoid Simulated Recoil
I have the body of an old Airsoft M4A1 and I had the idea of making it have simulated recoil through a solenoid.
I realize that I can't make something with the kick of a real gun but at least ...
1
vote
1
answer
325
views
Attempting to switch on and off a 4.5 V solenoid with a transistor using a push button to control input
I have a very simple setup powered by a 9 V battery. The lock solenoid when connected directly to the battery works great.
I have built a test circuit using a push button and a transistor in an ...
- 11
0
votes
1
answer
204
views
Can I work 30 of these Solenoid Valves from a battery?
The (30) solenoid valves are 12v, all identical, each controlled by a relay and are rated at 6.2 watts of power consumption.
They will all be turned on simultaneously and turned off separately. This ...
- 11
-2
votes
1
answer
55
views
How to power 12v DC pneumatic solenoid?
i am having a 12v dc pneumatic solenoid. It's mentioned with 200mA. Can i use 12 V 1.3 AH battery to power it up?
2
votes
1
answer
614
views
Solenoid capacitor circuit for paintball gun
Recently my electric paintball gun broke so i decided to come up with my own circuit. I tried to reverse engineer the one my gun had but it was covered in black glue...
I have been trying to design ...
- 21
0
votes
2
answers
768
views
The induced-emf formed in a solenoid connected with a battery
When a solenoid is connected with a battery and then the circuit is switched on, there would be an induced-emf, and after some time, this induced-emf will vanish when the current reaches maximum value,...
- 231
0
votes
2
answers
384
views
Good method to provide small additional voltage while on battery?
I have a circuit that drives solenoid lock rated @ 9V as shown below. The circuit works when the power is connected to the wall, which gives a constant 9V DC to Solenoid Power V+.
I also have a ...
- 506