All Questions
Tagged with ttl power-supply
7
questions
3
votes
3
answers
363
views
Power supply for medium-scale 74HC TTL circuit
I've developed an 8-bit computer, in the same vein as Ben Eater's wonderful 8-bit computer series. It's based on a collection of 74HCxx-series ICs, and fits (in theory!) on a single PCB board. I'm ...
- 31
1
vote
1
answer
217
views
Delay TTL signal from board power supply
To preface, I don't come from an EE background so I'm sorry if this question is extremely simplistic.
I have a shutter controller board that allows me to open and close a shutter (optical iris) with a ...
1
vote
0
answers
288
views
TTL in an RF switch
I am hoping to find help on how to properly connect supply voltage to my switch assembly in order to actuate. My switch has input requirement of +15, -15, GND, and +5V. Also, the 5v logic inputs. ...
- 11
0
votes
1
answer
103
views
Can I power TTL chips with an USB-powered MB102 board?
I am adapting the digital electronics lab assignments I teach so they can be done at home with inexpensive supplies rather than with the equipment in the hardware lab. I have breadboards, TTL chips, ...
- 1,609
0
votes
2
answers
763
views
What DC Power Supply Do I Need To Get For This Device?
I recently bought a small 3 to 1 HDMI Amplifier Switcher. It can work without power adapter only if the 3 HDMI inputs are connected and supplying current. I want to operate it with only 2 input which ...
- 147
0
votes
1
answer
3k
views
Digitally-controlled 0-10A constant current source for driving LEDs
I'm looking to build a circuit to drive single high-power LEDs. The circuit will be controlled from a series of TTL pins: one for enable/disable, and ~4-6 to set brightness via current.
The LEDs ...
5
votes
1
answer
671
views
Dual power supply confusing TTL serial?
Sorry for the vague title: I'm a bit of a noob at analogue electronics, more a logic &software guy. Basic problem is I'm sitting at the end of a cable with a USB powered Arduino trying to send ...
- 51