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106 Threads found on edaboard.com: Different Gnd
hi there i want to program the ds5000fp but no luck i have usb to ttl converter but i dont have the hc125 i connected RST to 5v and PSEN to gnd tried different baud rate hyperterminal do no give any ascii message after powering the chip is there a way to activate program mode without using HC125 , thanks
Apparently, the Arduino Serial Monitor doesn't use flow control, so loop-back (connecting RX and TX pin of the adapter) can work without pulling #CTS to gnd. Receive does work anyway. Checked with FTDI TTL-RS232-3V3 cable. No idea what the problem is, may be COM4 is assigned to a different device (Bluetooth serial or whatsoever).
I am using two different regulators one of +5V and another one of -5V. How much current will be drawn from each regulator? Hi, If you mean linear voltage regulators, hopefully the datasheet will state in the electrical characteristics how much ground pin current is drawn at different loads, and there should al
Presumed gnd1 and gnd2 are actually different nodes, the circuit still won't work, because you have ADC1/ADC2 shorting the secondary inductor/transformer winding. I also wonder if the processor has an isolated power supply as required. You need some kind of high voltage differential amplifier, e.g. (...)
Contrast setting and LED backlight are completely different things. To dim the LED backlight, you can e.g. connect a NMOSFET between LEDK and gnd and apply a pwm signal to the gate. For manual control, try low ohmic series resistors (some 10 to several 100 ohms).
Guys, when using virtuoso, i've noticed that we have many different types of the same layer For example, for metal 1, we have different types such as drw, pin, and, net, etc..... therefore, i am wondering whether or not I can get any data sheet explaining these types( I searched for a whole day and failed finding anything useful.)
This schematic has cristal generator. Probably, you are using passive oscillator based on resonator. Schematic will be different.
Since many parasitics are returned to ground (substrate) it is not unreasonable that the ground bounces hardest. The stray C from gpwr to gnd adds to gnd bounce. Since you show no series R anywhere, it seems unreasonable that the various buffers would have different ground bounce on a schematic-based simulation. To debug, look at your (...)
the ground of AC supply is different (from 12v ground). therefore no glow of bulb with battery + and ac ground pin. and bulb glows in 12v and its gnd(-) point. the term 'ground' is to be used with its own circuit.
O.K., that's a completely different circuit than the LTSpice schematic.
The "Guanella" 1:4 transmission line transformer can be used in different configurations, e.g. unbal-unbal. bal-unbal makes less sense according to the impedance values, but should work, too. The s3p files are however only specifying the unbal-bal configuration, as shown in the datasheet "Electrical Schematic". Additional parameters become effectiv
Hi, There are a lot of cheap bluetooth modules around. Some have only four connections: Vcc, gnd, Tx and Rx. It is obvious how to connect them. Maybe it is more simple than with RS232. The only thing is that you have to match both bluetooth devices. Pick a module (ore some different) and read datasheets. Klaus
THe ground shield is normally connected to power ground pin, but in situations where ground faults or high return DC currents cause offset voltage or injected noise into the common mode ground, designers may choose different methods of grounding for special situations. EMC is a two way situation for SMPS ingress with switching frequency nois
I am using this circuit to make a truth table for UCC27425. I am simply connecting the floating ends pf the 680 ohm resistors to Vcc and gnd in the different combinations. 117686 Here is the truth table I get based on the output on the LEDs: 117687 Something is wrong with my understanding of how th
Fig 2 in the datasheet shows 8 decades of performance on a single supply. V+ = 5V  V− = gnd  100pA ≤ Input signal ≤ 10mA What's different?
Designing a 4-layer board (signal+pwr, gnd, signal+pwr, gnd), and I have some newbie doubts about the best option to connect different connector's pin or IC's pad to power lines, or sometimes to different signals. Board has different parts: Power, MCU & RF. The main issues I have: Power at (...)
1)part of net name: N21923609 Connected lines: 2 ( TOP ) Connected shapes: 1 ( TOP ) 2)part of net name: gnd Connected lines: 3 ( TOP BOTTOM ) Connected shapes: 2 ( L4-gnd1 L9-gnd2 ) 3)part of net name: EVDD Connected lines: 1 ( BOTTOM ) Connected shapes: 2 ( TOP L7-PWR2 ) 4)part of net name: P5V Connected shapes: 2 ( TOP L2-PWR1) (...)
I think you have done matching for the bottom two NMOS current mirrors with different Pins like vss and gnd. May be it causes the problem. Try the both MOSes with same vss connection and do matching. May be you get cleared.
111197 Dear ravch.. I think there is a fundamental error in your oscillator circuit.You have used a transistor with 2 Source pins that are practically parallel but these Source pins are connected to gnd via different paths. This will create problem because while one side is acting series feedback circuit with a series c
I recommend a separate gnd copper pour that is connected to main gnd through multiple vias. Because if this pin is sensitive, you should protect it by covering a clean gnd otherwise current which are coming from different sources such as power and signal returns etc. will disturb your closed ring.