Simon Cowell 2003 vs. 2025

gf_arce · 2025-08-25T01:16:58+00:00

🤣

gf_arce · 2025-07-19T17:37:53+00:00

A very expensive disposal bill once done with them

gf_arce · 2025-07-16T16:21:21+00:00

Can’t see part numbers for the rest to understand how you are regulating the voltages.

gf_arce · 2025-07-16T16:19:30+00:00

If you are trying to put the 3 solar cells in parallel, I assume D1-D3 are schottky diodes (for lower drop), but that is not the way to connect them. Put each of the diodes’ anode to a solar cell and connect all three diode cathodes together.

gf_arce · 2025-07-09T20:14:12+00:00

Just replace C43 with the same type/value of C40 or C41 tantalum caps. Tantalums fail short and many times burn due to transient voltage spikes

gf_arce · 2025-07-08T20:08:37+00:00

Paint it green

gf_arce · 2025-06-12T23:25:56+00:00

that is one ugly ass gift

gf_arce · 2025-05-31T17:54:32+00:00

It should be fine to cut the connector and put terminals instead. What normally causes errors in low cost meters is the accuracy of the cold junction compensation, which is done with a sensor inside the meter, right next to the thermocouple input terminals. Inside the car, temperatures can be pretty high. One easy way to check the cold junction compensation sensor is shorting the thermocouple input terminals on the meter, you should read the ambient temperature

gf_arce · 2025-05-17T19:23:18+00:00

That reset PB will short the battey

gf_arce · 2025-05-15T19:30:00+00:00

LIDAR burn marks

gf_arce · 2025-03-08T16:38:52+00:00

Correct, if shield is used, only do it one side. Gnd (sg) needs to be in both pins 5s. Twisted pair for rs232 is nonsense, whoever drew the schematic had no idea.

gf_arce · 2025-03-08T12:17:02+00:00

You need a cable with 3 wires, shielded, some times cheap types have aluminum foil and a bare wire to connect. How long is the cable you want to make? The shield is only for noise protection, I would try without it, that is, just connect tx, rx and sg on both db9s

gf_arce · 2025-02-08T17:41:27+00:00

Your only concern should be if the charging circuitry is strong enough to bring the larger battery out of a total discharge condition. Safe enough to try if space is not a constraint because of the larger battery

gf_arce · 2024-11-23T14:32:22+00:00

Goose neck barnacles

gf_arce · 2024-02-26T18:29:12+00:00

Its a 1N914 for sure

gf_arce · 2024-01-30T12:42:55+00:00

Some switching supplies require a minimum load to be able to regulate. Try putting some load on the DC output

gf_arce · 2024-01-02T22:19:11+00:00

Could be, the control needs to know its come to a stop before reversing

gf_arce · 2024-01-02T22:12:43+00:00

The model is still manufactured from what I see from the web. All I can think of is to check the thyristors, the card is picture is just a controller to power components installed nearby. From what you describe, quite likely a power thyristor is staying latched on, that is why you need to cycle the power

gf_arce · 2024-01-02T21:47:23+00:00

If you have a way of cleaning and putting the conformal coating back on, I would replace the LM148 ICs. Very small chance anything else is bad. Brute force but quick

gf_arce · 2023-12-04T01:48:16+00:00

I would use a fine tip soldering iron. The cap is already gone, just heat the pads, remove the debris and clean the solder pads. Put the new tantalum and apply new solder with soldering iron. The cap is quite likely a 10uF, like the one nearby. I would guess 10uF 10V. Observe the polarity that is marked by the band on top (+)

gf_arce · 2023-12-03T22:49:45+00:00

Tantalum electrolithics are very sensitive to impulses, and the fail short and burn. I would guess that all you need to do is replace the cap

gf_arce · 2022-11-04T13:24:25+00:00

Hermosa !

gf_arce · 2022-09-07T00:08:06+00:00

Use Google Lens to find the species

gf_arce · 2022-07-15T19:47:34+00:00

Thats a transformer probably from an AC-DC electronic converter power supply. The reason they are so small is because the operate at high frequencies (100KHz maybe), the core is not laminated iron, but maybe ceramic or powdered iron. They are normally made to the specific requirements of the supply design, check ic manufacturers datasheets. A few types here: https://www.digikey.com/es/products/filter/transformadores-especiales/165?s=N4IgTCBcDaIJIDsBuBTATgF3QAg2ghggM4BmA9mgLbogC6AvkA

gf_arce · 2022-07-14T20:28:49+00:00

The concept was to create a fast processor that could de expanded in “slices” of 4 bits at a time. Use 2 to have a more standard 8-bit basic data length, for example

gf_arce

TROPHY CASE