adjustable delay recopy

[Gregory]

Hi,

I have to transmit a signal ( 0-10V pulse ) with an adjustable delay around
few milliseconds.

My input is 0-10V pulse and my output is simply the same retarded pulse.

Is there a simple way to do that with an analog schematics or existing IC.

Thanks

 

[John Larkin]

Hi,

I have to transmit a signal ( 0-10V pulse ) with an adjustable delay around
few milliseconds.

It's helpful if you explain the application. When people say "I have
to..." it makes us think it's a homework problem.

What's the pulse rate like?

John

 

[John Fields]

Hi,

I have to transmit a signal ( 0-10V pulse ) with an adjustable delay around
few milliseconds.

My input is 0-10V pulse and my output is simply the same retarded pulse.

Is there a simple way to do that with an analog schematics or existing IC.

---
View in Courier:




Vcc Vcc Vcc U1A
| | | +-------+
| | | |_ |
+->[500K] +-O|R |
| | |
Vin>--+-----|------|T |
| | | |
| +------|RC |
| | | |
| [0.01µF] | |
| | | |
| +------|C |
| | |_ _|
| GND +-O|T Q|--+
| | +-------+ |
| +-------------+-[0.1µF]--+------------+
| | |
| [10K] |
| | A--+
| Vcc Vcc Vcc GND +--Y U2A
| | | | | B--+
| | [500K]<-+ B | |
| [1M] | +-------+ +--B |
| | | |_ _| U2B Y--+-->OUT
| +-----|--O|R Q|---[0.1µF]--+-------A
| | | |_ | |
Vin>--+--|-----|---|T | [10K]
| | | | |
[0.1µF] +---|RC | GND
| | | | +---A
| [0.01µf]| | | U2C Y
| | | | +---B
+-----+---|C | |
| | | +---A
GND +-O|T Q|--+ | U2D Y
| +-------+ | +---B
+-------------+ |
GND

U1 = CD4538B
U2 = CD4002B
Vcc = 12V


Delay with pot set to ~ 200k ohms:
_______ _ _______
IN____| |_________________

-->| |<-- ~2ms -->| |<-- ~2ms
_______ _ _______
OUT_____| |______________

 

[John Fields]

Hi,

I have to transmit a signal ( 0-10V pulse ) with an adjustable delay around
few milliseconds.

My input is 0-10V pulse and my output is simply the same retarded pulse.

Is there a simple way to do that with an analog schematics or existing IC.

---
View in Courier:




Vcc Vcc Vcc U1A
| | | +-------+
| | | |_ |
+->[500K] +-O|R |
| | |
Vin>--+-----|------|T |
| | | |
| +------|RC |
| | | |
| [0.01µF] | |
| | | |
| +------|C |
| | |_ _|
| GND +-O|T Q|--+
| | +-------+ |
| +-------------+-[0.1µF]--+------------+
| | |
| [10K] |
| | A--+
| Vcc Vcc Vcc GND +--Y U2A
| | | | | B--+
| | [500K]<-+ B | |
| [1M] | +-------+ +--B |
| | | |_ _| U2B Y--+-->OUT
| +-----|--O|R Q|---[0.1µF]--+-------A
| | | |_ | |
Vin>--+--|-----|---|T | [10K]
| | | | |
[0.1µF] +---|RC | GND
| | | | +---A
| [0.01µf]| | | U2C Y
| | | | +---B
+-----+---|C | |
| | | +---A
GND +-O|T Q|--+ | U2D Y
| +-------+ | +---B
+-------------+ |
GND

U1 = CD4538B
U2 = CD4002B
Vcc = 12V


Delay with pot set to ~ 200k ohms:
_______ _ _______
IN____| |_________________

-->| |<-- ~2ms -->| |<-- ~2ms
_______ _ _______
OUT_____| |______________

---
There's an error in the reset circuitry.

This'll fix it and use up the spare gates.

Vcc
|
+-----+---+ U1A
| | | +-------+
| | | |_ |
+->[500K] +-O|R |
| | |
Vin>-+------|------|T |
| | | |
| +------|RC |
| | | |
| [0.01µF] | |
| | | |
| +------|C |
| | |_ _|
| GND +-O|T Q|--+
| | +-------+ |
| +-------------+-[0.1µF]---+----------------+
| | |
| Vcc [10K] |
| | | A--+
| +----+---+ GND +--Y U2A
| | | | | B--+
| +->[500k]| U1B | |
| | | +-------+ +--B |
| | | |_ _| U2B Y--+-->OUT
| | +-O|R Q|----+ Vcc +--A
| | |_ | | | |
+------|------|T | [0.1µF] [0.1µF] |
| | | | | |
+------|RC | +---+ +---+ |
| | | | | | | |
[0.01µf] | | [10K] | | [1MR] |
| | | | | | | Y
+-----+------|C | GND | | GND U2D
| | | | | A B
GND +-O|T Q|--+ | +---A | |
| +-------+ | | U2C Y-+---+
+-------------+ +------B