Purpose.
The device is designed to mimic the Dell power supply for laptops, all-in-one devices and personal computers. Dec.
Definition.
f to determine the power of the power sources (hereinafter referred to as PS). Dell uses a hardware-software method that consists of installing an EPROM to the power supply running on the 1-cable protocol, and its output is routed to the central pin (needle) of the power supply connector. When you connect a device to a power supply, data exchange takes place, and the device recognizes the power supply and determines its power. At the same time, many devices are f. The possible power supplies of dells are strictly limited, and they will not turn on (or use a limited operating mode) when the wrong power supply is used. This device allows you to simulate the exchange of a device with a power supply with the following power options: 45, 65, 90, 130, 150, 180, 210, 230, 240, 330 W.
Therefore, it is sufficient to use the existing power supply (LBP) for workshops with the Asus type connector + with this device. A standard Pegatron DC 5.5 x 2.5 mm connector is used to connect the external +19V power supply. On the end side of the board there are two groups of contacts for soldering (two "tails" are intended to be used: with large and small diameter connectors): GND - common, ID - information "needle", +19 - + power supply. Along the long edge there are two groups of LEDs: a row of green LEDs indicating the emulation power; three device status LEDs, a control button.
The "CONN" LED lights up in green, and the fact that it is active means that the device recognizes the request signature from device F. Dell (indicates that the device most likely read the code correctly); The orange "SHIFT" LED indicates the short or long transmission mode (details are below); The red "ALARM" LED indicates the presence of a high potential (above +6 V) in the information line, which most likely indicates that this line is broken at +19 V in the connector or circuits of the tested device.
This button is used to change the power of the emulated power supply (short press) or change the sending modes (long press for 3 seconds). You also need to press this button to reset the emergency mode.
Operation of the device.
When the card is powered up, a self-test takes place: three groups of operating mode LEDs light up first, then the power selection LEDs (running light) light up in turn. Then you can select the desired power by briefly pressing the control key.
F. Dell has changed the format of the message written to EPROM at least four times so far. In addition, it seems that the timing of working with EPROM on some new devices does not comply with the 1-wire standard. Two modes of operation were selected: short transmission and shortened timings (determined by the vast majority of devices) and full transmission (required on some older work-level devices). To switch to long transmission mode, you need to press the button for 3 seconds, then the orange LED will light up. The transition to normal mode is performed in the same way.
The operating mode and power are maintained after the power is cut off.
After the device to be tested is connected, the information line switches to reading mode; the green “CONN” LED lights up when the request signature is detected from the device. Unfortunately, the exchange format does not mean that the device gives a receipt for the correct reading, so the active status of the LED does not guarantee the 100% validity of the exchange!
The information line has an overvoltage protection circuit and allows connection to +19V without damaging the microcontroller chip. The presence of a voltage above +6V causes the protection indicated by the red LED "Alarm" to activate. This can be reset by pressing a button or disconnecting the device from the electrical supply.
Attention!!!
Control signals, modes, etc. we do not guarantee 100% protection against overvoltage on the information line in various combinations. The failure of the device due to the malfunction of the information line is not covered by the WARRANTY! However, before shipment, all the cards have been tested by us for their stable operation in terms of protection against +19V voltage.
You use the device at your own risk! Any damage, loss, etc. that may occur on the tested device. we are not responsible for situations.
Since it is possible to simulate a high-power power supply (210 W - 330 W), it is necessary to understand that printed circuit boards, connectors and connecting cables experience high current values up to 20 A. To prevent combustion and voltage drops, if the tested device needs to be operated at a power consumption close to the maximum (for example, testing video performance on a gaming laptop), it is necessary to duplicate the power supply circuits with a copper wire with a cross-section of at least 1.5 m2 on the printed circuit board of the device. mm.
I wish you success in your renovation!

Download the annotated image in its original size

Video
Warranty & Return
All products have been checked and packaged in good condition before dispatch.
In case the item is defective, please inform us within 30 days of receipt, we will replace a new one. No Refunds are offered.
Buyers have to pay for the return cost and we will pay the cost for resend.
If you do not understand its purpose - please not buy !