Yes. I believe that they show both circuits and electronic parts but surprisingly, I believe that when viewed together, that they also show pieces of a larger something…
When viewing the seals, I realise that they are at least partly stylised. Why, well- that is open to discussion - however, hiding the obvious in plain sight using stylisation is something that has been done since the first sunrise.
This is a remarkable concurrence of events and
perhaps we should talk about the Goetia and related matter - or maybe later, let me just get to it then.
I am not an expert, although I have discussed this matter with several electrical engineers - some think I’m nuts…others just stare at me but a big thank you to @VROSS for opening my eyes and for all the technical things 
Lets begin with Belial, the reason is mostly due to those set of remarkable concurrence’s I spoke of before - they are important… I’m sure. This is the sigil for Belial, the one we’re all familiar with:
Now, on the image below you’ll see that I’ve circled the upper portion of the sigil
This, to me at least, appears to be a stylised image of a Strain Gauge.
Here is the technical drawing of a Strain Gauge
So, what’s a Strain Gauge? Well, a strain gauge is a sensor whose measured electrical resistance varies with changes in strain. Strain is the deformation or displacement of material that results from an applied stress. Stress is the force applied to a material, divided by the material’s cross-sectional area. Load cells are designed to focus stress through beam elements where strain gauges are located. Strain gauges convert the applied force, pressure, torque, etc…, into an electrical signal which can be measured. Force causes strain, which is then measured with the strain gauge by way of a change in electrical resistance. Then the voltage measurement is gathered using data acquisition.
Piezoelectric displacement is where strain gauges are widely applied. Now, Piezoelectricity is the electric charge that accumulates in certain solid materials -such as crystals, certain ceramics and biological matter such as bone, DNA and various proteins - in response to applied mechanical stress. Interesting that!!
Ok, let’s keep it moving! So lets look at the sigil for Belial again
The circled areas remind me of a stylised Thermocouple with temperature sensors on either end. Positive and Negative charges.
Technical drawing of a Thermocouple
What’s a Thermocouple? A Thermocouple is an electrical device consisting of two dissimilar electrical conductors forming an electrical junction. A thermocouple produces a temperature-dependant voltage as a result of the Seebeck effect, and this voltage can be interpreted to measure temperature. Thermocouples are widely used as temperature sensors. hmm!
So I’m thinking: “I have what i believe is a Strain Gauge and a Thermocouple but what the hek does that mean and what use are they together in one sigil?” It must be just coincidence and me seeing things. Then @VROSS comes at me with this:
“A Thermocouple can be and is sometimes wired to a Strain Gauge to create A Strain-Gauge Thermocouple!” for simultaneous strain and temperature measurements…
What are the odds of this sigil having those two components wired together at the perfect place, I mean look at it!
Let’s move on
This, to me, looks exactly like a fuse, one on either side of our component.
Technical drawing of Fuse
Interestingly, it looks like a Caduceus when rotated 90°.
Just for fun… In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide over current protection of an electrical circuit. It’s essential component is a metal wire or strip that melts when too much current flows through it. It is a sacrificial device!
Alright, let’s go!
These appear to me as Gunn Diodes.
Technical Gunn Diode drawing
A Gunn Diode, also known as a transferred electron device (TED), is a form of diode, a two-terminal semiconductor electronic component, with negative resistance, used in high-frequency electronics. It’s largest use is in electronic oscillators to generate microwaves, in applications such as radar speed guns, MICROWAVE RELAY DATA LINK TRANSMITTERS and AUTOMATIC DOOR OPENERS.
Getting very interesting now!!
Quickly, before I have to go!
They appear to be SPST switches…
Technical drawing
What are SPST switches…
SPST switches are single pole, single throw switches that only have a single input and can connect to only one output.
And looking at the Belials sigil…that’s exactly what you see - An Input terminal and an Output terminal on the opposite side.
Wheres the on-off switch?
Its right there…where it should be
