"The Great Debate" - Plug Top or just Plug?

[Dustydazzler]

plug top or just plug

 

[Lucien Nunes]

This one will appeal to George. Today, I was getting incorrect counts on a timecode generator that is driven with biphase from an optical encoder. Scoped the biphase lines and they were all over the shop. Checked the +5V supply from the box to the encoder, there's 100Hz ripple on it which is mucking up the encoder operation.

It's an American unit, which I am powering from the 230V mains here in Estonia, via a step-down autotransformer. Hmm, I thought, maybe my step-down is giving too low a voltage for the unit, causing the DC rail to drop out of regulation. Let's see what the supply voltage is, and what it is supposed to be.

Transformer output rating: 110V. Actual: 115V
TCG rated operating voltage: 115V

So, no, nothing to do with 110V vs. 115V vs. 120V. Actually, a bona fide failed capacitor in the power supply. It's working now.

 

[Jim_e_Jib]

This one will appeal to George. Today, I was getting incorrect counts on a timecode generator that is driven with biphase from an optical encoder. Scoped the biphase lines and they were all over the shop. Checked the +5V supply from the box to the encoder, there's 100Hz ripple on it which is mucking up the encoder operation.

It's an American unit, which I am powering from the 230V mains here in Estonia, via a step-down autotransformer. Hmm, I thought, maybe my step-down is giving too low a voltage for the unit, causing the DC rail to drop out of regulation. Let's see what the supply voltage is, and what it is supposed to be.

Transformer output rating: 110V. Actual: 115V
TCG rated operating voltage: 115V

So, no, nothing to do with 110V vs. 115V vs. 120V. Actually, a bona fide failed capacitor in the power supply. It's working now.

It appeals to me too but not for voltage related reasons - what equipment were you working on? We have a lovely Rank Cintel MKIII telecine that kicks out biphase to sync to an Albrecht MB51 sound follower.

 

[Midwest]

This one will appeal to George. Today, I was getting incorrect counts on a timecode generator that is driven with biphase from an optical encoder. Scoped the biphase lines and they were all over the shop. Checked the +5V supply from the box to the encoder, there's 100Hz ripple on it which is mucking up the encoder operation.

It's an American unit, which I am powering from the 230V mains here in Estonia, via a step-down autotransformer. Hmm, I thought, maybe my step-down is giving too low a voltage for the unit, causing the DC rail to drop out of regulation. Let's see what the supply voltage is, and what it is supposed to be.

Transformer output rating: 110V. Actual: 115V
TCG rated operating voltage: 115V

So, no, nothing to do with 110V vs. 115V vs. 120V. Actually, a bona fide failed capacitor in the power supply. It's working now.

Sorry Lucien, for once your talking total -------s. Here's a better explanation;

 

[Midwest]

How? There is nowhere to put a fuse in the top.

There's a little set of tinned or brassy contacts in the plug top where the fuse goes. If you like I can draw you some pictures to explain. Anybody got some crayons?

 

[GeorgeCooke]

There's a little set of tinned or brassy contacts in the plug top where the fuse goes. If you like I can draw you some pictures to explain. Anybody got some crayons?

You'll find they are in the plug bottom. Dare I say it? You are not very bright are you?

 

[Midwest]

You'll find they are in the plug bottom. Dare I say it? You are not very bright are you?

Don’t be daft, there ain’t such a thing as a plug bottom, thicky.

 

[GeorgeCooke]

Don’t be daft, there ain’t such a thing as a plug bottom, thicky.

Dare I say it? You are not very bright are you?

 

[telectrix]

ther is a plug top and a plug bottom. it's the bottom that holds the terminals and the top that keeps fingers out. in it's entirity, it's a plug.

 

[Spoon]

ther is a plug top and a plug bottom. it's the bottom that holds the terminals and the top that keeps fingers out. in it's entirity, it's a plug.

Would you class the bit that holds the cable the 'plug middle'... or am I just being thick again....??

 

[Pete999]

Would you class the bit that holds the cable the 'plug middle'... or am I just being thick again....??

You and Tel uping your post count again, I see, LOL

 

[Spoon]

You and Tel uping your post count again, I see, LOL

I like to contribute to these fascinating discussions mate...

 

[telectrix]

if you plugged a plug into a cheesecake, would it affect the circuit IR readings?

 

[Spoon]

if you plugged a plug into a cheesecake, would it affect the circuit IR readings?

You are the one with the meter, mate. Give it a try....
Send any leftover cheesecake to me....

 

[telectrix]

the answer is no, because the cheesecake is not part of the circuit.

 

[Pete999]

I like to contribute to these fascinating discussions mate...

Right I get you,