Discussion Overview
The discussion revolves around the feasibility of using a battery with a higher voltage than specified to power two monitors that require 19V @ 1.3A each. Participants explore the implications of using a 22.2V battery and whether additional components, such as resistors or DC-DC converters, are necessary to ensure safe operation.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- One participant inquires about the possibility of directly using a 22.2V battery with monitors that require 19V, suggesting the need for resistors to lower the voltage.
- Another participant asks if the monitors' datasheets or user manuals specify a range of acceptable input voltages and suggests contacting technical support for clarification.
- A participant mentions that a 19V supply is typically used to charge a 4-cell Lithium Ion system, indicating that the voltage might need to be higher for proper operation.
- One participant references a service manual indicating that the 19V circuit is closely tied to the monitor's electronics, suggesting that the voltage tolerance might be tight, possibly around 10%.
- Another participant recommends using a DC-DC converter to safely handle the voltage difference, providing a link to a product designed for car battery inputs.
- A later reply discusses finding a suitable DC-DC regulator that can handle the required current for the monitors, expressing uncertainty about the circuit schematics and confirming that the proposed solution should work.
Areas of Agreement / Disagreement
Participants express differing views on whether a direct connection to the higher voltage battery is safe. While some suggest using a DC-DC converter for safety, others question the necessity of additional components. The discussion remains unresolved regarding the best approach to take.
Contextual Notes
There are limitations regarding the specifications of the monitors and the exact voltage tolerance, which are not fully clarified in the discussion. The necessity of using a DC-DC converter versus the possibility of direct connection remains a point of contention.