Comments on: Implementing XOR and XNOR Logic Functions using Diode Bridge and Transistor

By: Ligo George

Ligo George — Fri, 12 Dec 2014 12:51:00 +0000

In reply to Richard Tang. I think you should increase the base resistor 10K .. otherwise it may damage the transistor.

By: Richard Tang

Richard Tang — Wed, 10 Dec 2014 01:30:00 +0000

Hi, I would like to know if using figure 1(a), by applying either 82Vdc to A or B, would the circuit work? For the NPN transistor I would use TIP31C. The question is awkward, but is necessary for me in my design. Would really appreciate your help. The reason why it is 82Vdc is that I am testing a voltage suppression diode (bidirectional) which when 82Vdc passes through the diode, it will go directly into breakdown allowing to pass. When it reaches your figure 1(a), will it be allowed to work? Thanks.

By: john

john — Fri, 10 Oct 2014 20:45:00 +0000

In reply to Ligo George. So when you plan on using high voltages, God brings it to you/provides ample ground, and your design can just leave it out?

By: Ligo George

Ligo George — Fri, 10 Oct 2014 04:52:00 +0000

In reply to Brengle. These are intended for applications with works with higher voltages than standard voltages.. like 24V or 30V.. Understand the working of the circuit first and then try to implement it.

By: Brengle

Brengle — Tue, 07 Oct 2014 19:32:00 +0000

It is an interesting idea but I’ve been unable to make them work.
Figure 1a doesn’t have any connection to GND.
Figure 1b has GND, but doesn’t connect to any supply voltage.

Have I missed something?