Wiring & diagram Info: panel

Showing posts with label panel. Show all posts

Saturday, September 20, 2014

Fuse Box Toyota 1995 Camry LE Instrument Panel Diagram

Fuse Box Toyota 1995 Camry LE Instrument Panel Diagram - Here are new post for Fuse Box Toyota 1995 Camry LE Instrument Panel Diagram.

Fuse Box Toyota 1995 Camry LE Instrument Panel Diagram

Fuse Panel Layout Diagram Parts: noise filter, defogger fuse, power fuse, power main relay, taillight relay, cowl wire, integration relay, defogger relay.

Thursday, September 4, 2014

Solar Panel Current Meter

This schema is used to measure the current from a solar panel. It has very low power loss for currents in the 0-10A range. It also works as a general purpose DC current meter. The schema can be used on either the positive or negative side of a DC schema.

Specifications

Measured Current: 0-10 Amps DC
Circuit Voltage: Will work with DC diagram at any practical voltage.
Accuracy: approximately 2%, depending on the meter movement.

Theory

The current to be measured flows through the 0.01 ohm resistor which causes a small voltage drop across the resistor. The 100 microamp meter is set up with the series 50 ohm and 500 ohm variable resistor in a voltage measurement configuration to measure this voltage drop. The 500 ohm variable resistor is used to adjust the meters full scale reading. The 50 ohm resistor limits the maximum current to the meter no matter what setting is on the 500 ohm resistor, this protects the meter from passing too much current and burning up. The series resistance of the meter, 500 ohm (or less) variable resistor and 50 ohm resistor should total 1000 ohms. Different meters may require a different variable resistor to achieve the 1000 ohm value.

Construction

Build the meter into a metal box with the meter and two connectors mounted on the outside of the box.

Alignment

Put the meter schema in series with a known current meter such as a digital VOM meter set to measure current. Run a known current through both meters. Adjust the 500 ohm resistor until both meters read the same current. A good way to get a known current is to put a 12V lead acid battery in series with a 2 ohm 100 watt current limiting resistor. This will produce approximately 6 Amps of current. Put the two meters in series with this loop and adjust for the same reading. Beware, the resistor will get fairly hot in a short time.

Use

Connect this schema in series with a nominal 12V or 24V solar panel array. The meter can go in either the positive or negative side of the solar panel schema. The current flowing through the solar panel to the load will be shown on the meter.

Parts

1x 100 microamp DC meter
1x 0.01 ohm 5 W resistor
1x 50 ohm 1/4 W resistor
1x 500 ohm 10 turn variable resistor
2x banana plugs or a 2 pin screw type terminal block.
1x metal box